maitre d'hotel vs maitre d'

maitre d'hotel and maitre d' both are nouns.

Word	Noun	Adjective	Verb	Adverb
maitre d'hotel	Yes	No	No	No
maitre d'	Yes	No	No	No

As nouns, maitre d'hotel and maitre d' are synonyms defined as:

maitre d'hotel and maitre d': a dining-room attendant who is in charge of the waiters and the seating of customers

Other synonyms of maitre d'hotel include captain, headwaiter.

maitre d'hotel (noun)	maitre d' (noun)
a dining-room attendant who is in charge of the waiters and the seating of customers	a dining-room attendant who is in charge of the waiters and the seating of customers