griffon has 7 distinct synonyms spread across 4 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.
winged monster with the head of an eagle and the body of a lion
breed of various very small compact wiry-coated dogs of Belgian origin having a short bearded muzzle
breed of medium-sized long-headed dogs with downy undercoat and harsh wiry outer coat; originated in Holland but largely developed in France
large vulture of southern Europe and northern Africa having pale plumage with black wings
Synonyms, antonyms and the broader and narrower relations for griffon come from Princeton University’s WordNet. Full sources and licences.