mary queen of scots has 1 distinct synonym spread across 1 of its 1 sense. 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.
queen of Scotland from 1542 to 1567; as a Catholic she was forced to abdicate in favor of her son and fled to England where she was imprisoned by Elizabeth I; when Catholic supporters plotted to put her on the English throne she was tried and executed for sedition (1542-1587)
Synonyms, antonyms and the broader and narrower relations for mary queen of scots come from Princeton University’s WordNet. Full sources and licences.