part vs air

part and air both are nouns.

Word	Noun	Adjective	Verb	Adverb
part	Yes	No	Yes	Yes
air	Yes	No	Yes	No

As nouns, air is a hypernym of part; that is, air is a word with a broader meaning than part:

part: the melody carried by a particular voice or instrument in polyphonic music
air: a succession of notes forming a distinctive sequence

Other hypernyms of part include line, melodic line, melodic phrase, melody, strain, tune.

As nouns, air is a hyponym of part; that is, air is a word with a more specific, narrower meaning than part:

part (noun)	air (noun)
the actions and activities assigned to or required or expected of a person or group	travel via aircraft
the effort contributed by a person in bringing about a result	a distinctive but intangible quality surrounding a person or thing
something less than the whole of a human artifact	a succession of notes forming a distinctive sequence
an item that is an instance of some type	medium for radio and television broadcasting
a line of scalp that can be seen when sections of hair are combed in opposite directions	the region above the ground
one of the portions into which something is regarded as divided and which together constitute a whole	the mass of air surrounding the Earth
an actor's portrayal of someone in a play	a slight wind (usually refreshing)
that which concerns a person with regard to a particular role or situation	a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
the melody carried by a particular voice or instrument in polyphonic music	once thought to be one of four elements composing the universe (Empedocles), associated with the humour blood
the extended spatial location of something
a portion of a natural object
assets belonging to or due to or contributed by an individual person or group
something determined in relation to something that includes it

part (verb)	air (verb)
move or break apart	expose to cool or cold air so as to cool or freshen
force, take, or pull apart	expose to warm or heated air, so as to dry
depart for someplace	make public
go one's own way; move apart	broadcast over the airwaves, as in radio or television
discontinue an association or relation; go different ways	be broadcast
	expose to fresh air

part (adverb)	air (adverb)
to some extent; in some degree; not wholly