british pound sterling has 4 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.
the basic unit of money in Great Britain and Northern Ireland; equal to 100 pence
Synonyms, antonyms and the broader and narrower relations for british pound sterling come from Princeton University’s WordNet. Full sources and licences.