homologous vs biology

homologous is not a noun while biology is a noun.

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

homologous (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

homologous (adjective)	biology (adjective)
corresponding or similar in position or structure or function or characteristics; especially derived from an organism of the same species
having the same evolutionary origin but not necessarily the same function