aries has 2 distinct synonyms spread across 2 of its 3 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.
a small zodiacal constellation in the northern hemisphere; between Pisces and Taurus
Synonyms, antonyms and the broader and narrower relations for aries come from Princeton University’s WordNet. Full sources and licences.
the first sign of the zodiac which the sun enters at the vernal equinox; the sun is in this sign from about March 21 to April 19