fanfare vs tune

fanfare and tune both are nouns.

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

As nouns, tune is a hypernym of fanfare; that is, tune is a word with a broader meaning than fanfare:

Other hypernyms of fanfare include air, line, melodic line, melodic phrase, melody, strain.

fanfare (noun)	tune (noun)
a gaudy outward display	the adjustment of a radio receiver or other circuit to a required frequency
(music) a short lively tune played on brass instruments	the property of producing accurately a note of a given pitch
	a succession of notes forming a distinctive sequence

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