antechamber vs foyer

antechamber and foyer both are nouns.

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

As nouns, antechamber and foyer are synonyms defined as:

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

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