biological science vs bionomical

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

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

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

biological science (adjective)	bionomical (adjective)
	of or relating to the science of ecology