roadhouse vs auberge

roadhouse and auberge both are nouns.

Word	Noun	Adjective	Verb	Adverb
roadhouse	Yes	No	No	No
auberge	Yes	No	No	No

As nouns, auberge is a hypernym of roadhouse; that is, auberge is a word with a broader meaning than roadhouse:

roadhouse: an inn (usually outside city limits on a main road) providing meals and liquor and dancing and (sometimes) gambling
auberge: a hotel providing overnight lodging for travelers

Other hypernyms of roadhouse include hostel, hostelry, inn, lodge.

roadhouse (noun)	auberge (noun)
an inn (usually outside city limits on a main road) providing meals and liquor and dancing and (sometimes) gambling	a hotel providing overnight lodging for travelers