cernuous vs biology

cernuous is not a noun while biology is a noun.

Word	Noun	Adjective	Verb	Adverb
cernuous	No	Yes	No	No
biology	Yes	No	No	No

cernuous (noun)	biology (noun)
	the science that studies living organisms
	all the plant and animal life of a particular region
	characteristic life processes and phenomena of living organisms

cernuous (adjective)	biology (adjective)
having branches or flower heads that bend downward