intensify vs intensification

intensify is not a noun while intensification is a noun.

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

intensify (noun)	intensification (noun)
	action that makes something stronger or more extreme
	the act of increasing the contrast of (a photographic film)

intensify (verb)	intensification (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