harmonizer vs harmonize

harmonizer is a noun but harmonize is not a noun.

Word	Noun	Adjective	Verb	Adverb
harmonizer	Yes	No	No	No
harmonize	No	No	Yes	No

harmonizer (noun)	harmonize (noun)
a mediator who brings one thing into harmonious agreement with another
a musician who sings or plays in harmony

harmonizer (verb)	harmonize (verb)
	bring into consonance, harmony, or accord while making music or singing
	bring into consonance or accord
	bring (several things) into consonance or relate harmoniously
	sing or play in harmony
	write a harmony for
	go together