shower curtain vs drapery

shower curtain and drapery both are nouns.

Word	Noun	Adjective	Verb	Adverb
shower curtain	Yes	No	No	No
drapery	Yes	No	No	No

As nouns, drapery is a hypernym of shower curtain; that is, drapery is a word with a broader meaning than shower curtain:

shower curtain: a curtain that keeps water from splashing out of the shower area
drapery: hanging cloth used as a blind (especially for a window)

Other hypernyms of shower curtain include curtain, drape, mantle, pall.

shower curtain (noun)	drapery (noun)
a curtain that keeps water from splashing out of the shower area	hanging cloth used as a blind (especially for a window)
	cloth gracefully draped and arranged in loose folds