zygomorphous vs biological science

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

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

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

zygomorphous (adjective)	biological science (adjective)
capable of division into symmetrical halves by only one longitudinal plane passing through the axis