hotelkeeper vs hotelier

hotelkeeper and hotelier both are nouns.

Word	Noun	Adjective	Verb	Adverb
hotelkeeper	Yes	No	No	No
hotelier	Yes	No	No	No

As nouns, hotelkeeper and hotelier are synonyms defined as:

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

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