zygomorphous vs biology

zygomorphous is not a noun while biology is a noun.

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

zygomorphous (noun)	biology (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

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