maitre d' vs headwaiter

maitre d' and headwaiter both are nouns.

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

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

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

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

maitre d' (noun)	headwaiter (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