face has 19 distinct synonyms spread across 10 of its 22 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
the front of the human head from the forehead to the chin and ear to ear
“he washed his face”
the general outward appearance of something
“the face of the city is changing”
the striking or working surface of an implement
a part of a person that is used to refer to a person
“he looked out at a roomful of faces”
the part of an animal corresponding to the human face
the side upon which the use of a thing depends (usually the most prominent surface of an object)
“he dealt the cards face down”
a contorted facial expression
“she made a grimace at the prospect”
a specific size and style of type within a type family
status in the eyes of others
“he lost face”
a vertical surface of a building or cliff
Synonyms, antonyms and the broader and narrower relations for face come from Princeton University’s WordNet. Full sources and licences.
turn so as to face; turn the face in a certain direction
“Turn and face your partner now”
turn so as to expose the face
“face a playing card”