ectotherm vs poikilotherm

ectotherm and poikilotherm both are nouns.

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

As nouns, ectotherm and poikilotherm are synonyms defined as:

ectotherm and poikilotherm: an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals

ectotherm (noun)	poikilotherm (noun)
an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals	an animal whose body temperature varies with the temperature of its surroundings; any animal except birds and mammals