chemical science vs unsaturated

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

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

chemical science (noun)	unsaturated (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)	unsaturated (adjective)
	used of a compound (especially of carbon) containing atoms sharing more than one valence bond
	not saturated; capable of dissolving more of a substance at a given temperature
	(of color) not chromatically pure; diluted