ling has 11 distinct synonyms spread across 4 of its 5 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.
water chestnut whose spiny fruit has two rather than 4 prongs
common Old World heath represented by many varieties; low evergreen grown widely in the northern hemisphere
elongated marine food fish of Greenland and northern Europe; often salted and dried
Synonyms, antonyms and the broader and narrower relations for ling come from Princeton University’s WordNet. Full sources and licences.