caravansary vs hostel

caravansary and hostel both are nouns.

Word	Noun	Adjective	Verb	Adverb
caravansary	Yes	No	No	No
hostel	Yes	No	No	No

As nouns, hostel is a hypernym of caravansary; that is, hostel is a word with a broader meaning than caravansary:

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

Other hypernyms of caravansary include auberge, hostelry, inn, lodge.

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