ion vs ionize

ion is a noun but ionize is not a noun.

Word	Noun	Adjective	Verb	Adverb
ion	Yes	No	No	No
ionize	No	No	Yes	No

ion (noun)	ionize (noun)
a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons

ion (verb)	ionize (verb)
	convert into ions
	become converted into ions