apposition vs biological science

apposition and biological science both are nouns.

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

apposition (noun)	biological science (noun)
the act of positioning close together (or side by side)	the science that studies living organisms
(biology) growth in the thickness of a cell wall by the deposit of successive layers of material
a grammatical relation between a word and a noun phrase that follows