air transport vs transportation

air transport and transportation both are nouns.

Word	Noun	Adjective	Verb	Adverb
air transport	Yes	No	No	No
transportation	Yes	No	No	No

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

Other hypernyms of air transport include shipping, transport.

air transport (noun)	transportation (noun)
transportation by air	the act of moving something from one location to another
	the commercial enterprise of moving goods and materials
	the act of expelling a person from their native land
	a facility consisting of the means and equipment necessary for the movement of passengers or goods
	the sum charged for riding in a public conveyance