heterologous vs biological science

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

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

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

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