chemical science vs catalyse

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

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

chemical science (noun)	catalyse (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)	catalyse (verb)
	change by catalysis or cause to catalyze