chemical science vs carbocyclic

chemical science is a noun but carbocyclic is not a noun.

Word	Noun	Adjective	Verb	Adverb
chemical science	Yes	No	No	No
carbocyclic	No	Yes	No	No

chemical science (noun)	carbocyclic (noun)
the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

chemical science (adjective)	carbocyclic (adjective)
	having or relating to or characterized by a ring composed of carbon atoms