reed has 5 distinct synonyms spread across 4 of its 5 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.
tall woody perennial grasses with hollow slender stems especially of the genera Arundo and Phragmites
United States journalist who reported on the October Revolution from Petrograd in 1917; founded the Communist Labor Party in America in 1919; is buried in the Kremlin in Moscow (1887-1920)
Synonyms, antonyms and the broader and narrower relations for reed come from Princeton University’s WordNet. Full sources and licences.
United States physician who proved that yellow fever is transmitted by mosquitoes (1851-1902)
a vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it
“the clarinetist fitted a new reed onto his mouthpiece”
a musical instrument that sounds by means of a vibrating reed