harmoniser vs harmonise

harmoniser is a noun but harmonise is not a noun.

Word	Noun	Adjective	Verb	Adverb
harmoniser	Yes	No	No	No
harmonise	No	No	Yes	No

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

harmoniser (verb)	harmonise (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