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sonata vs. concerto

[suh-nah-tuh] / səˈnɑ tə /

noun

Music.
  1. a composition for one or two instruments, typically in three or four movements in contrasted forms and keys.

[kuhn-cher-toh, kawn-cher-taw] / kənˈtʃɛr toʊ, kɔnˈtʃɛr tɔ /

noun

Music.

plural

concertos, concerti
  1. a composition for one or more principal instruments, with orchestral accompaniment, now usually in symphonic form.