beach buggy vs RV

beach buggy and RV both are nouns.

Word	Noun	Adjective	Verb	Adverb
beach buggy	Yes	No	No	No
RV	Yes	No	No	No

As nouns, RV is a hypernym of beach buggy; that is, RV is a word with a broader meaning than beach buggy:

beach buggy: a recreational vehicle with large tires used on beaches or sand dunes
RV: a motorized wheeled vehicle used for camping or other recreational activities

Other hypernyms of beach buggy include R.V., recreational vehicle.

beach buggy (noun)	RV (noun)
a recreational vehicle with large tires used on beaches or sand dunes	a motorized wheeled vehicle used for camping or other recreational activities