carousel vs conveyor belt

carousel and conveyor belt both are nouns.

Word	Noun	Adjective	Verb	Adverb
carousel	Yes	No	No	No
conveyor belt	Yes	No	No	No

As nouns, conveyor belt is a hypernym of carousel; that is, conveyor belt is a word with a broader meaning than carousel:

carousel: a conveyer belt that carries luggage to be claimed by air travelers
conveyor belt: a moving belt that transports objects (as in a factory)

Other hypernyms of carousel include conveyer, conveyer belt, conveyor, transporter.

carousel (noun)	conveyor belt (noun)
a large, rotating machine with seats for children to ride on for amusement	a moving belt that transports objects (as in a factory)
a conveyer belt that carries luggage to be claimed by air travelers