nonstop vs uninterrupted

nonstop is a noun but uninterrupted is not a noun.

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

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

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

nonstop (adverb)	uninterrupted (adverb)
without stopping