These are terms commonly used in the alterhuman community. They are not terms I've made personally. If you know who coined these terms, please let me know and I'll tag them.
(typo in alt text found by @xcekait)
Alterhuman: having an identity/experience that is either alternative to humanity or an alternative form of humanity
Correction of the definition by @a-dragons-journal @anoneyemoose
Archethrope: an identity under the alterhuman umbrella, in where someone experiences an archetype, trope, or otherwise preestablished character model
Example: someone who identifies with/as pirates
Awakening: the event in where one discovered they are otherkin
Conceptkin: an identity under the alterhuman umbrella, in where someone identifies as a concept
Example: someone who identifies with/as the void
Copinglink: a consciously created non-human/fictional identity
Correction of the definition by @/a-dragons-journal (tagged above)
Original post/definition:
Alright, alright. So look. I’ve seen some people claiming bullshit about the term I created 6 months ago. So, as the creator of the word in
Kin: short for 'otherkin' or used as a suffix to describe a creature/concept/entity/etc to be someone's identity
Example: being dragonkin = someone identifies with/as a dragon
Object-kin: an identity under the alterhuman umbrella, in where someone identifies as an object
Other-hearted: having a strong connection to a species as opposed to identifying as one
Phanthom-limb: sensations of a limb or part of a body that doesn't exist
Poly-kin: someone who's otherkin and has more than one kintype
Shift: some aspect of yourself changing to become closer to that of your kintype.
Examples of types of shifts:
Mental shift: is a shift in which one's mental state changes to reflect that of their kintype
Phantom shift: a shift in where someone experiences phanthom-limbs
Correction of the definition by @/a-dragons-journal (tagged above)