amsterdam has 2 distinct synonyms spread across 1 of its 1 sense. 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 industrial center and the nominal capital of the Netherlands; center of the diamond-cutting industry; seat of an important stock exchange; known for its canals and art museum
Synonyms, antonyms and the broader and narrower relations for amsterdam come from Princeton University’s WordNet. Full sources and licences.