bend has 18 distinct synonyms spread across 10 of its 12 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. Its 2 recorded opposites are straighten, unbend.
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.
movement that causes the formation of a curve
curved segment (of a road or river or railroad track etc.)
a town in central Oregon at the eastern foot of the Cascade Range
diagonal line traversing a shield from the upper right corner to the lower left
Synonyms, antonyms and the broader and narrower relations for bend come from Princeton University’s WordNet. Full sources and licences.