stalked vs biology

stalked is not a noun while biology is a noun.

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

stalked (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

stalked (adjective)	biology (adjective)
having or growing on or from a peduncle or stalk