lodge vs roadhouse

lodge and roadhouse both are nouns.

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

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

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

Other hyponyms of lodge include caravan inn, caravansary, caravanserai, khan, imaret, post house, posthouse.

lodge (noun)	roadhouse (noun)
any of various Native American dwellings	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
a small (rustic) house used as a temporary shelter
small house at the entrance to the grounds of a country mansion; usually occupied by a gatekeeper or gardener
a formal association of people with similar interests