scleroderma has 2 distinct synonyms spread across 2 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 autoimmune disease that affects the blood vessels and connective tissue; fibrous connective tissue is deposited in the skin
genus of poisonous fungi having hard-skinned fruiting bodies: false truffles
Synonyms, antonyms and the broader and narrower relations for scleroderma come from Princeton University’s WordNet. Full sources and licences.