biological science vs zygomorphous

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

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

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

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