air vs atomic number 18

air and atomic number 18 both are nouns.

Word	Noun	Adjective	Verb	Adverb
air	Yes	No	Yes	No
atomic number 18	Yes	No	No	No

air (noun)	atomic number 18 (noun)
travel via aircraft	a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
a distinctive but intangible quality surrounding a person or thing
a succession of notes forming a distinctive sequence
medium for radio and television broadcasting
the region above the ground
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)	atomic number 18 (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