orange has 4 distinct synonyms spread across 4 of its 6 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.
round yellow to orange fruit of any of several citrus trees
orange color or pigment; any of a range of colors between red and yellow
Synonyms, antonyms and the broader and narrower relations for orange come from Princeton University’s WordNet. Full sources and licences.
any pigment producing the orange color
a river in South Africa that flows generally westward to the Atlantic Ocean
of the color between red and yellow; similar to the color of a ripe orange