camping bus vs camper

camping bus and camper both are nouns.

Word	Noun	Adjective	Verb	Adverb
camping bus	Yes	No	No	No
camper	Yes	No	No	No

As nouns, camping bus and camper are synonyms defined as:

camping bus and camper: a recreational vehicle equipped for camping out while traveling

Other synonyms of camping bus include motor home.

camping bus (noun)	camper (noun)
a recreational vehicle equipped for camping out while traveling	a recreational vehicle equipped for camping out while traveling
	someone living temporarily in a tent or lodge for recreation