hosteller vs hotel manager

hosteller and hotel manager both are nouns.

Word	Noun	Adjective	Verb	Adverb
hosteller	Yes	No	No	No
hotel manager	Yes	No	No	No

As nouns, hosteller and hotel manager are synonyms defined as:

Other synonyms of hosteller include hotelier, hotelkeeper, hotelman.

hosteller (noun)	hotel manager (noun)
a traveler who lodges in hostels	an owner or manager of hotels
an owner or manager of hotels