musical composition vs sheet music

Other hyponyms of musical composition include morceau, arrangement, musical arrangement, realisation, realization, intermezzo, introit, solo, duet, duette, duo, trio, quartet, quartette, quintet, quintette, sestet, sextet, sextette, septet, septette, octet, octette, bagatelle, divertimento, serenade, canon, etude, idyl, idyll, pastoral, pastorale, sonata, toccata, fantasia, musical passage, passage, movement, larghetto, suite, symphonic poem, tone poem, medley, pastiche, potpourri, nocturne, notturno, song, vocal, study, capriccio, motet, program music, programme music, incidental music, csardas, czardas.