chemical science vs aromatic

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

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

chemical science (noun)	aromatic (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)	aromatic (adjective)
	(chemistry) of or relating to or containing one or more benzene rings
	having a strong pleasant odor