secretariat has 1 distinct synonym spread across 1 of its 2 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.
an administrative unit responsible for maintaining records and other secretarial duties; especially for international organizations
thoroughbred that won the triple crown in 1973
Synonyms, antonyms and the broader and narrower relations for secretariat come from Princeton University’s WordNet. Full sources and licences.