downy vs biology

downy is not a noun while biology is a noun.

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

downy (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

downy (adjective)	biology (adjective)
covered with fine soft hairs or down
like down or as soft as down