tin has 7 distinct synonyms spread across 4 of its 7 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.
a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide
a vessel (box, can, pan, etc.) made of tinplate and used mainly in baking
Synonyms, antonyms and the broader and narrower relations for tin come from Princeton University’s WordNet. Full sources and licences.
prepare (a metal) for soldering or brazing by applying a thin layer of solder to the surface