hostel vs caravan inn

hostel and caravan inn both are nouns.

Word	Noun	Adjective	Verb	Adverb
hostel	Yes	No	No	No
caravan inn	Yes	No	No	No

As nouns, caravan inn is a hyponym of hostel; that is, caravan inn is a word with a more specific, narrower meaning than hostel:

hostel: a hotel providing overnight lodging for travelers
caravan inn: an inn in some eastern countries with a large courtyard that provides accommodation for caravans

Other hyponyms of hostel include caravansary, caravanserai, khan, imaret, post house, posthouse, roadhouse.

hostel (noun)	caravan inn (noun)
inexpensive supervised lodging (especially for youths on bicycling trips)	an inn in some eastern countries with a large courtyard that provides accommodation for caravans
a hotel providing overnight lodging for travelers