harmony vs harmonic

harmony and harmonic both are nouns.

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

harmony (noun)	harmonic (noun)
an agreeable sound property	any of a series of musical tones whose frequencies are integral multiples of the frequency of a fundamental
compatibility in opinion and action	a tone that is a component of a complex sound
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

harmony (adjective)	harmonic (adjective)
	of or relating to harmony as distinct from melody and rhythm
	of or relating to the branch of acoustics that studies the composition of musical sounds
	of or relating to harmonics
	involving or characterized by harmony
	relating to vibrations that occur as a result of vibrations in a nearby body