polling booth vs booth

polling booth and booth both are nouns.

Word	Noun	Adjective	Verb	Adverb
polling booth	Yes	No	No	No
booth	Yes	No	No	No

As nouns, booth is a hypernym of polling booth; that is, booth is a word with a broader meaning than polling booth:

polling booth: a temporary booth in a polling place which people enter to cast their votes
booth: small area set off by walls for special use

Other hypernyms of polling booth include cubicle, kiosk, stall.

polling booth (noun)	booth (noun)
a temporary booth in a polling place which people enter to cast their votes	small area set off by walls for special use
	a small shop at a fair; for selling goods or entertainment
	a table (in a restaurant or bar) surrounded by two high-backed benches