<p>No, them being of the same material doesn't mean they are related.</p><p>i.e. Bone keys (from TibiaWiki)</p><table border="1" style="background-attachment:initial !important; background-clip:initial !important; background-color:#051122; background-image:none !important; background-origin:initial !important; background-position:initial !important; background-repeat:initial !important; background-size:initial !important; border-collapse:collapse !important; border:1px solid #0f6357 !important; color:#3a3a3a; font-family:"Helvetica Neue",Helvetica,Arial,sans-serif; font-size:16px; margin:1em 1em 1em 0px !important; width:857.5px" class="full-width jquery-tablesorter sortable wikitable"><tbody><tr style="background-color:rgba(225, 156, 85, 0.25)"><td style="border-style:solid; border-width:1px; padding:0.2em"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Key_3520" title="Key 3520" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Key style="width:857.5px"><tbody><tr><td><a rel="nofollow" href="https://tibia.fandom.com/wiki/Key_3520">Key 3520</a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center; vertical-align:middle"><a rel="nofollow" href="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en" class="image image-thumbnail" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);"><img src="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en" alt="Bone Key" data-image-key="Bone_Key.gif" data-image-name="Bone Key.gif" style="border-style:initial; border-width:0px; font-style:inherit; font-weight:inherit; height:32px; margin:0px; padding:0px; vertical-align:middle; width:32px"></a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Carlin" title="Carlin" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Carlin</a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center">For style="text-align:center; vertical-align:middle"><a rel="nofollow" href="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en"><img alt="Bone Key" src="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en" style="border-style:initial; border-width:0px; height:32px; margin:0px; width:32px"></a></td><td style="text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Carlin">Carlin</a></td><td style="text-align:center; width:80%">For access to the <a rel="nofollow" href="https://tibia.fandom.com/wiki/Carlin_Graveyard" title="Carlin Graveyard" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Carlin Graveyard</a>.</td></tr><tr style="background-color:rgba(225, 156, 85, 0.75)"><td style="border-style:solid; border-width:1px; padding:0.2em"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Key_3960" title="Key 3960" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Key href="https://tibia.fandom.com/wiki/Carlin_Graveyard">Carlin Graveyard</a>.</td></tr><tr><td><a rel="nofollow" href="https://tibia.fandom.com/wiki/Key_3960">Key 3960</a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center; vertical-align:middle"><a rel="nofollow" href="https://vignette.wikia.nocookie.net/tibia/images/9/94/Wooden_Key.gif/revision/latest?cb=20051023200156&path-prefix=en" class="image image-thumbnail" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);"><img style="text-align:center; vertical-align:middle"><a rel="nofollow" href="https://vignette.wikia.nocookie.net/tibia/images/9/94/Wooden_Key.gif/revision/latest?cb=20051023200156&path-prefix=en"><img alt="Wooden Key" data-image-key="Wooden_Key.gif" data-image-name="Wooden Key.gif" style="border-style:initial; border-width:0px; font-style:inherit; font-weight:inherit; height:32px; margin:0px; padding:0px; vertical-align:middle; width:32px"></a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Fibula" title="Fibula" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Fibula</a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center">Opened src="https://vignette.wikia.nocookie.net/tibia/images/9/94/Wooden_Key.gif/revision/latest?cb=20051023200156&path-prefix=en" style="border-style:initial; border-width:0px; height:32px; margin:0px; width:32px"></a></td><td style="text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Fibula">Fibula</a></td><td style="text-align:center">Opened the Flute Room in <a rel="nofollow" href="https://tibia.fandom.com/wiki/Fibula" title="Fibula" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Fibula</a>. href="https://tibia.fandom.com/wiki/Fibula">Fibula</a>. Comes in <a rel="nofollow" href="https://tibia.fandom.com/wiki/Wooden_Key" title="Wooden Key" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">wooden</a> and <a rel="nofollow" href="https://tibia.fandom.com/wiki/Bone_Key" title="Bone Key" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">bone</a> variants. href="https://tibia.fandom.com/wiki/Wooden_Key">wooden</a> and <a rel="nofollow" href="https://tibia.fandom.com/wiki/Bone_Key">bone</a> variants. This key is no longer in use.</td></tr><tr style="background-color:rgba(225, 156, 85, 0.25)"><td style="border-style:solid; border-width:1px; padding:0.2em"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Key_5050" title="Key 5050" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Key use.</td></tr><tr><td><a rel="nofollow" href="https://tibia.fandom.com/wiki/Key_5050">Key 5050</a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center; vertical-align:middle"><a rel="nofollow" href="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en" class="image image-thumbnail" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);"><img src="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en" alt="Bone Key" data-image-key="Bone_Key.gif" data-image-name="Bone Key.gif" style="border-style:initial; border-width:0px; font-style:inherit; font-weight:inherit; height:32px; margin:0px; padding:0px; vertical-align:middle; width:32px"></a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Dark_Cathedral" title="Dark Cathedral" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Dark style="text-align:center; vertical-align:middle"><a rel="nofollow" href="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en"><img alt="Bone Key" src="https://vignette.wikia.nocookie.net/tibia/images/8/81/Bone_Key.gif/revision/latest?cb=20051017164522&path-prefix=en" style="border-style:initial; border-width:0px; height:32px; margin:0px; width:32px"></a></td><td style="text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Dark_Cathedral">Dark Cathedral</a></td><td style="border-style:solid; border-width:1px; padding:0.2em; text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Angelina" title="Angelina" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Angelina</a>'s style="text-align:center"><a rel="nofollow" href="https://tibia.fandom.com/wiki/Angelina">Angelina</a>'s cell in <a rel="nofollow" href="https://tibia.fandom.com/wiki/Dark_Cathedral" title="Dark Cathedral" style="border: 0px; font-style: inherit; font-weight: inherit; margin: 0px; padding: 0px; vertical-align: baseline; text-decoration-line: none; color: rgb(53, 25, 151);">Dark href="https://tibia.fandom.com/wiki/Dark_Cathedral">Dark Cathedral</a>.</td></tr></tbody></table><p> You can find the key list here <a rel="nofollow" href="https://tibia.fandom.com/wiki/Keys">https://tibia.fandom.com/wiki/Keys</a></p>