booth vs sales booth

booth and sales booth both are nouns.

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

As nouns, sales booth is a hyponym of booth; that is, sales booth is a word with a more specific, narrower meaning than booth:

Other hyponyms of booth include stall, stand.

booth (noun)	sales booth (noun)
small area set off by walls for special use	a booth where articles are displayed for sale
a small shop at a fair; for selling goods or entertainment
a table (in a restaurant or bar) surrounded by two high-backed benches