univalve vs zoology

univalve and zoology both are nouns.

Word	Noun	Adjective	Verb	Adverb
univalve	Yes	Yes	No	No
zoology	Yes	No	No	No

univalve (noun)	zoology (noun)
a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes	the branch of biology that studies animals
	all the animal life in a particular region or period

univalve (adjective)	zoology (adjective)
used of mollusks, especially gastropods, as snails etc.