biological science vs hibernating

biological science is a noun but hibernating is not a noun.

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

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

biological science (adjective)	hibernating (adjective)
	in a condition of biological rest or suspended animation