Identity
Part of speech: noun
Definition: The sameness some individuals share to make up the same kind or universal. The difference or character that marks off an individual from the rest of the same kind, selfhood. A name or persona—the mask or appearance one presents to the world—by which one is known. Knowledge of who one is. Any function which maps all elements of its domain to themselves. An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this, second element.
Example sentence: What colonialism does is cause an identity crisis about one's own culture.
Indistinguishability
Part of speech: noun
Definition: The state of being indistinguishable