biology vs homologous

biology is a noun but homologous is not a noun.

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

biology (noun)	homologous (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

biology (adjective)	homologous (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