douche vs douche bag

douche and douche bag both are nouns.

Word	Noun	Adjective	Verb	Adverb
douche	Yes	No	Yes	No
douche bag	Yes	No	No	No

As nouns, douche and douche bag are synonyms defined as:

douche and douche bag: a small syringe with detachable nozzles; used for vaginal lavage and enemas

douche (noun)	douche bag (noun)
irrigation with a jet of water or medicated solution into or around a body part (especially the vagina) to treat infections or cleanse from odorous contents	a small syringe with detachable nozzles; used for vaginal lavage and enemas
a small syringe with detachable nozzles; used for vaginal lavage and enemas

douche (verb)	douche bag (verb)
direct a spray of water into a bodily cavity, for cleaning