scene vs scenario

scene and scenario both are nouns.

Word	Noun	Adjective	Verb	Adverb
scene	Yes	No	No	No
scenario	Yes	No	No	No

As nouns, scenario is a hyponym of scene; that is, scenario is a word with a more specific, narrower meaning than scene:

scene (noun)	scenario (noun)
the painted structures of a stage set that are intended to suggest a particular locale	an outline or synopsis of a play (or, by extension, of a literary work)
graphic art consisting of the graphic or photographic representation of a visual percept	a postulated sequence of possible events
the visual percept of a region	a setting for a work of art or literature
a subdivision of an act of a play or performance
a consecutive series of pictures that constitutes a unit of action in a film
an incident (real or imaginary)
the place where some action occurs
the context and environment in which something is set
a situation treated as an observable object
a display of bad temper