jackson has 15 distinct synonyms spread across 8 of its 11 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.
English film actress who later became a member of British Parliament (born in 1936)
United States singer who began singing with his four brothers and later became a highly successful star during the 1980s (born in 1958)
United States singer who did much to popularize gospel music (1911-1972)
United States civil rights leader who led a national campaign against racial discrimination and ran for presidential nomination (born in 1941)
United States writer of romantic novels about the unjust treatment of Native Americans (1830-1885)
general in the Confederate Army during the American Civil War whose troops at the first Battle of Bull Run stood like a stone wall (1824-1863)
7th president of the US; successfully defended New Orleans from the British in 1815; expanded the power of the presidency (1767-1845)
capital of the state of Mississippi on the Pearl River
Synonyms, antonyms and the broader and narrower relations for jackson come from Princeton University’s WordNet. Full sources and licences.