dissociate vs chemical science

dissociate is not a noun while chemical science is a noun.

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

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

dissociate (verb)	chemical science (verb)
to undergo a reversible or temporary breakdown of a molecule into simpler molecules or atoms
regard as unconnected
part; cease or break association with