adaxial vs biological science

adaxial is not a noun while biological science is a noun.

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

adaxial (noun)	biological science (noun)
	the science that studies living organisms

adaxial (adjective)	biological science (adjective)
nearest to or facing toward the axis of an organ or organism