chemical science vs sulphurette

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

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

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

chemical science (verb)	sulphurette (verb)
	combine with sulfur