andromeda has 3 distinct synonyms spread across 1 of its 4 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.
broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers
any of several shrubs of the genus Andromeda having leathery leaves and clusters of small flowers
Synonyms, antonyms and the broader and narrower relations for andromeda come from Princeton University’s WordNet. Full sources and licences.
(Greek mythology) an Ethiopian princess and daughter of Cassiopeia; she was fastened to a rock and exposed to a sea monster that was sent by Poseidon, but she was rescued by Perseus and became his wife
a constellation in the northern hemisphere between Cassiopeia and Pegasus; contains the Andromeda galaxy