intensifier vs intensify

intensifier is a noun but intensify is not a noun.

Word	Noun	Adjective	Verb	Adverb
intensifier	Yes	No	No	No
intensify	No	No	Yes	No

intensifier (noun)	intensify (noun)
a modifier that has little meaning except to intensify the meaning it modifies

intensifier (verb)	intensify (verb)
	become more intense
	make more intense, stronger, or more marked
	increase in extent or intensity
	make the chemically affected part of (a negative) denser or more opaque in order produce a stronger contrast between light and dark