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

機関[karakuri] mechanism
アナログ計算機[anarogukeisanki] analog computer
エンジン発動機[enjinhatsudouki] engine
サーボ機構[saabokikou] servomechanism
シフト演算機構[shifutoenzankikou] shift arithmetic unit

ジェット機[jettoki] jet aeroplane
弾機[hatsujou] spring (e.g. coil, leaf)
ヒグス機構[higusukikou] Higgs mechanism (physics)
プロペラ機[puroperaki] propeller-driven aircraft
圧延機[atsuenki] rolling machine