bonanzayoudaoicibaDictYouDict[bonanza 词源字典]
bonanza: [19] Bonanza entered the language via American English from Spanish, where bonanza means ‘prosperity’, or literally ‘good weather’. It came from an unrecorded general Romance *bonacia, a derivative of Latin bonus ‘good’. (Other English words acquired ultimately from bonus – a descendant of Old Latin duenos – include bonbon [19], bonus [18], boon [14] (as in ‘boon companion’), bounty [13] (from Latin bonitas ‘goodness’), and perhaps bonny [15].) It appears to have been formed on the analogy of Latin malacia, as if this meant ‘bad weather’, from malus ‘bad’, although it in fact originally meant ‘calm at sea’, from Greek malakós.
=> bonbon, bonny, bonus, boon, bounty[bonanza etymology, bonanza origin, 英语词源]
bounty (n.)youdaoicibaDictYouDict
mid-13c., "generosity," from Old French bonte "goodness" (12c., Modern French bonté), from Latin bonitatem (nominative bonitas) "goodness," from bonus "good" (see bene-). Sense of "gift bestowed by a sovereign or the state" led to extended senses of "gratuity to a military recruit" (1702) and "reward for killing or taking a criminal or enemy" (1764).
I do ... promise, that there shall be paid ... the following several and respective premiums and Bounties for the prisoners and Scalps of the Enemy Indians that shall be taken or killed .... ["Papers of the Governor of Pennsylvania," 1764]