europe has 7 distinct synonyms spread across 1 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 2nd smallest continent (actually a vast peninsula of Eurasia); the British use `Europe' to refer to all of the continent except the British Isles
an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members
“he tried to take Britain into the Europen Union”
the nations of the European continent collectively
“the Marshall Plan helped Europe recover from World War II”
Synonyms, antonyms and the broader and narrower relations for europe come from Princeton University’s WordNet. Full sources and licences.