form genus vs biological science

form genus and biological science both are nouns.

Word	Noun	Adjective	Verb	Adverb
form genus	Yes	No	No	No
biological science	Yes	No	No	No

form genus (noun)	biological science (noun)
an artificial taxonomic category established on the basis of morphological resemblance for organisms of obscure true relationships especially fossil forms	the science that studies living organisms
(biology) an artificial taxonomic category for organisms of which the true relationships are obscure; forms the first half of a species' unique Latinate name