序に[tsuideni] incidentally
安寧秩序[anneichitsujo] peace and order
機序[kijo] mechanism
時間順序積[jikanjunjoseki] time ordered product (physics)
次序[jijo] order

順序[junjo] order
順序通り[junjodoori] in (the proper) order
順序不同[junjofudou] unordered
順序立てる[junjodateru] to put into order
序で[tsuide] opportunity

カバー曲[kabaakyoku] remake of another artist's song (a "cover")
サイン曲線[sainkyokusen] sinusoid
愛唱曲[aishoukyoku] favourite song
委曲[ikyoku] details
一曲[ikkyoku] tune (melody, piece of music)

迂曲[ukyoku] meander
円曲[enkyoku] roundabout way (of speaking or working)
円錐曲線[ensuikyokusen] conic curve
円舞曲[enbukyoku] waltz (composition)
演曲[enkyoku] musical program