commodity (n.)youdaoicibaDictYouDict[commodity 词源字典]
early 15c., "benefit, profit, welfare;" later "a convenient or useful product," from Middle French commodité "benefit, profit," from Latin commoditatem (nominative commoditas) "fitness, adaptation, convenience, advantage," from commodus "suitable, convenient" (see commode). General sense "property possession" is from c. 1500.[commodity etymology, commodity origin, 英语词源]