transportation vs on-line

transportation is a noun but on-line is not a noun.

Word	Noun	Adjective	Verb	Adverb
transportation	Yes	No	No	No
on-line	No	Yes	No	No

transportation (noun)	on-line (noun)
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

transportation (adjective)	on-line (adjective)
	connected to a computer network or accessible by computer
	on a regular route of a railroad or bus or airline system
	being in progress now