commerce
n.
1530s, from Middle French commerce (14c.), from Latin commercium "trade, trafficking," from com- "together" (see com-) + merx (genitive mercis) "merchandise" (see market, n.).
〔李〕[com-;merc;-en.] n.商业； 贸易 ←merc,merch (L merx,mercis)=goods, wares 商品，货物