harmonise vs harmony

harmonise is not a noun while harmony is a noun.

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

harmonise (noun)	harmony (noun)
	an agreeable sound property
	compatibility in opinion and action
	agreement of opinions
	the structure of music with respect to the composition and progression of chords
	a harmonious state of things in general and of their properties (as of colors and sounds); congruity of parts with one another and with the whole

harmonise (verb)	harmony (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