poikilotherm vs animal

poikilotherm and animal both are nouns.

Word	Noun	Adjective	Verb	Adverb
poikilotherm	Yes	No	No	No
animal	Yes	Yes	No	No

As nouns, animal is a hypernym of poikilotherm; that is, animal 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
animal: a living organism characterized by voluntary movement

Other hypernyms of poikilotherm include animate being, beast, brute, creature, fauna.

poikilotherm (noun)	animal (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

poikilotherm (adjective)	animal (adjective)
	marked by the appetites and passions of the body