chemical science vs carboxylate

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

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

chemical science (noun)	carboxylate (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)	carboxylate (verb)
	treat (a chemical compound) with carboxyl or carboxylic acid