antechamber vs entrance hall

antechamber and entrance hall both are nouns.

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

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

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

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

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