foyer vs antechamber

foyer and antechamber both are nouns.

Word	Noun	Adjective	Verb	Adverb
foyer	Yes	No	No	No
antechamber	Yes	No	No	No

As nouns, foyer and antechamber are synonyms defined as:

Other synonyms of foyer include anteroom, entrance hall, hall, lobby, vestibule.

foyer (noun)	antechamber (noun)
a large entrance or reception room or area	a large entrance or reception room or area