personation vs mimicry

personation and mimicry both are nouns.

Word	Noun	Adjective	Verb	Adverb
personation	Yes	No	No	No
mimicry	Yes	No	No	No

As nouns, mimicry is a hyponym of personation; that is, mimicry is a word with a more specific, narrower meaning than personation:

Other hyponyms of personation include apery.

personation (noun)	mimicry (noun)
imitating the mannerisms of another person	the act of mimicking; imitative behavior
acting the part of a character on stage; dramatically representing the character by speech and action and gesture	the resemblance of an animal species to another species or to natural objects; provides concealment and protection from predators