shower bath vs cubicle

shower bath and cubicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
shower bath	Yes	No	No	No
cubicle	Yes	No	No	No

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

Other hypernyms of shower bath include booth, kiosk, stall.

shower bath (noun)	cubicle (noun)
washing yourself by standing upright under water sprayed from a nozzle	small area set off by walls for special use
booth for washing yourself, usually in a bathroom	small individual study area in a library
	small room in which a monk or nun lives