biological science vs fissiparous

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

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

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

biological science (adjective)	fissiparous (adjective)
	reproducing by fission
	having separated or advocating separation from another entity or policy or attitude