democracy has 3 distinct synonyms spread across 2 of its 3 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.
the political orientation of those who favor government by the people or by their elected representatives
a political system in which the supreme power lies in a body of citizens who can elect people to represent them
the doctrine that the numerical majority of an organized group can make decisions binding on the whole group
Synonyms, antonyms and the broader and narrower relations for democracy come from Princeton University’s WordNet. Full sources and licences.