tuning vs tune

tuning and tune both are nouns.

Word	Noun	Adjective	Verb	Adverb
tuning	Yes	No	No	No
tune	Yes	No	Yes	No

tuning (noun)	tune (noun)
(music) calibrating something (an instrument or electronic circuit) to a standard frequency	the adjustment of a radio receiver or other circuit to a required frequency
	the property of producing accurately a note of a given pitch
	a succession of notes forming a distinctive sequence

tuning (verb)	tune (verb)
	adjust the pitches of (musical instruments)
	adjust for (better) functioning