football has 1 distinct synonym spread across 1 of its 2 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.
any of various games played with a ball (round or oval) in which two teams try to kick or carry or propel the ball into each other's goal
the inflated oblong ball used in playing American football
Synonyms, antonyms and the broader and narrower relations for football come from Princeton University’s WordNet. Full sources and licences.