caravanserai vs hostel

caravanserai and hostel both are nouns.

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

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

caravanserai: 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 caravanserai include auberge, hostelry, inn, lodge.

caravanserai (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