biological science vs heterologous

biological science is a noun but heterologous is not a noun.

Word	Noun	Adjective	Verb	Adverb
biological science	Yes	No	No	No
heterologous	No	Yes	No	No

biological science (noun)	heterologous (noun)
the science that studies living organisms

biological science (adjective)	heterologous (adjective)
	derived from organisms of a different but related species
	not corresponding in structure or evolutionary origin