Roget's Thesaurus

#13. Identity

Nouns

identity, sameness; coincidence, coalescence; convertibility; equality etc. 27; selfness, self, oneself; identification. monotony, tautology etc. (repetition) 104. facsimile etc. (copy) 21; homoousia: alter ego etc. (similar) 17; ipsissima verba [Lat.] etc. (exactness) 494; same; self, very, one and the same; very thing, actual thing; real McCoy; no other; one and only; in the flesh.

Verbs

be identical etc. adj.; coincide, coalesce, merge. treat as the same, render the same, identical; identify; recognize the identity of.

Adjectives

identical; self, ilk; the same etc. n.. selfsame, one and the same, homoousian. coincide, coalescent, coalescing; indistinguishable; one; equivalent etc. (equal) 27; tweedle dee and tweedle dum [Lat.]; much the same, of a muchness; unaltered.

Adverbs

identically etc. adj.; on all fours.