RV vs camper

RV and camper both are nouns.

Word	Noun	Adjective	Verb	Adverb
RV	Yes	No	No	No
camper	Yes	No	No	No

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

RV: a motorized wheeled vehicle used for camping or other recreational activities
camper: a recreational vehicle equipped for camping out while traveling

Other hyponyms of RV include camping bus, motor home, beach buggy, dune buggy.

RV (noun)	camper (noun)
a motorized wheeled vehicle used for camping or other recreational activities	a recreational vehicle equipped for camping out while traveling
	someone living temporarily in a tent or lodge for recreation