entrance hall vs antechamber

entrance hall and antechamber both are nouns.

Word	Noun	Adjective	Verb	Adverb
entrance hall	Yes	No	No	No
antechamber	Yes	No	No	No

As nouns, entrance hall and antechamber are synonyms defined as:

entrance hall and antechamber: a large entrance or reception room or area

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

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