hotelier vs hotel manager

hotelier and hotel manager both are nouns.

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

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

Other synonyms of hotelier include hosteller, hotelkeeper, hotelman.

hotelier (noun)	hotel manager (noun)
an owner or manager of hotels	an owner or manager of hotels