chinquapin has 9 distinct synonyms spread across 3 of its 3 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.
shrubby tree closely related to the Allegheny chinkapin but with larger leaves; southern midwestern United States
shrubby chestnut tree of southeastern United States having small edible nuts
small nut of either of two small chestnut trees of the southern United States; resembles a hazelnut
Synonyms, antonyms and the broader and narrower relations for chinquapin come from Princeton University’s WordNet. Full sources and licences.