lobby vs anteroom

lobby and anteroom both are nouns.

Word	Noun	Adjective	Verb	Adverb
lobby	Yes	No	Yes	No
anteroom	Yes	No	No	No

As nouns, lobby and anteroom are synonyms defined as:

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

lobby (noun)	anteroom (noun)
a large entrance or reception room or area	a large entrance or reception room or area
an interest group that tries to influence legislators or bureaucrats to act in their favor, typically through lobbying
the people who support some common cause or business or principle or sectional interest

lobby (verb)	anteroom (verb)
detain in conversation by or as if by holding on to the outer garments of; as for political or economic favors