hotel manager vs hotelier

hotel manager and hotelier both are nouns.

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

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

Other synonyms of hotel manager include hosteller, hotelkeeper, hotelman.

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