backdrop vs scenery

backdrop and scenery both are nouns.

Word	Noun	Adjective	Verb	Adverb
backdrop	Yes	No	No	No
scenery	Yes	No	No	No

As nouns, scenery is a hypernym of backdrop; that is, scenery is a word with a broader meaning than backdrop:

backdrop: scenery hung at back of stage
scenery: the painted structures of a stage set that are intended to suggest a particular locale

Other hypernyms of backdrop include scene.

backdrop (noun)	scenery (noun)
scenery hung at back of stage	the painted structures of a stage set that are intended to suggest a particular locale
	the appearance of a place