air vs N

air and N both are nouns.

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

air (noun)	N (noun)
travel via aircraft	the 14th letter of the Roman alphabet
a distinctive but intangible quality surrounding a person or thing	(of a solution) concentration expressed in gram equivalents of solute per liter
a succession of notes forming a distinctive sequence	a unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal to 100,000 dynes
medium for radio and television broadcasting	the cardinal compass point that is at 0 or 360 degrees
the region above the ground	a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
the mass of air surrounding the Earth
a slight wind (usually refreshing)
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
once thought to be one of four elements composing the universe (Empedocles), associated with the humour blood

air (verb)	N (verb)
expose to cool or cold air so as to cool or freshen
expose to warm or heated air, so as to dry
make public
broadcast over the airwaves, as in radio or television
be broadcast
expose to fresh air