Face party (4)
I believe the answer is:
side
I believe this is a double definition.
'face' is the first definition.
(synonyms)
'party' is the second definition.
(eg a side or party in a contract)
(Other definitions for side that I've seen before include "superciliousness" , "pretentious attitude" , "Not the main" , "Team - pretentious manner" , "Airs, conceit" .)