poikilotherm vs animate being

poikilotherm and animate being both are nouns.

Word	Noun	Adjective	Verb	Adverb
poikilotherm	Yes	No	No	No
animate being	Yes	No	No	No

As nouns, animate being is a hypernym of poikilotherm; that is, animate being is a word with a broader meaning than poikilotherm:

poikilotherm: an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals
animate being: a living organism characterized by voluntary movement

Other hypernyms of poikilotherm include animal, beast, brute, creature, fauna.

poikilotherm (noun)	animate being (noun)
an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals	a living organism characterized by voluntary movement