moon has 9 distinct synonyms spread across 5 of its 9 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 natural satellite of the Earth
“the average distance to the Moon is 384,400 kilometers”
any object resembling a moon
“he made a moon lamp that he used as a night light”
the period between successive new moons (29.531 days)
United States religious leader (born in Korea) who founded the Unification Church in 1954; was found guilty of conspiracy to evade taxes (born in 1920)
Synonyms, antonyms and the broader and narrower relations for moon come from Princeton University’s WordNet. Full sources and licences.
expose one's buttocks to
“moon the audience”