variety vs biological science

variety and biological science both are nouns.

Word	Noun	Adjective	Verb	Adverb
variety	Yes	No	No	No
biological science	Yes	No	No	No

variety (noun)	biological science (noun)
noticeable heterogeneity	the science that studies living organisms
a difference that is usually pleasant
a category of things distinguished by some common characteristic or quality
a show consisting of a series of short unrelated performances
(biology) a taxonomic category consisting of members of a species that differ from others of the same species in minor but heritable characteristics
a collection containing a variety of sorts of things