estivation vs zoological science

estivation and zoological science both are nouns.

Word	Noun	Adjective	Verb	Adverb
estivation	Yes	No	No	No
zoological science	Yes	No	No	No

estivation (noun)	zoological science (noun)
(botany) the arrangement of sepals and petals in a flower bud before it opens	the branch of biology that studies animals
(zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period