nonstop vs continuous

nonstop is a noun but continuous is not a noun.

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

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

nonstop (adjective)	continuous (adjective)
at all times	continuing in time or space without interruption
(of a journey especially a flight) occurring without stops	of a function or curve; extending without break or irregularity

nonstop (adverb)	continuous (adverb)
without stopping