uninterrupted vs nonstop

uninterrupted is not a noun while nonstop is a noun.

Word	Noun	Adjective	Verb	Adverb
uninterrupted	No	Yes	No	No
nonstop	Yes	Yes	No	Yes

uninterrupted (noun)	nonstop (noun)
	a flight made without intermediate stops between source and destination

uninterrupted (adjective)	nonstop (adjective)
continuing in time or space without interruption	at all times
having undisturbed continuity	(of a journey especially a flight) occurring without stops

uninterrupted (adverb)	nonstop (adverb)
	without stopping