单词：boon 和 bonus有什么具体区别,都是代表“福利”

楼上说的大实话两词确实长得不一样.
Boon: benefit, favor. especially : one that is given in answer to a request
Bonus: something in addition to what is expected or strictly due: as
a : money or an equivalent given in addition to an employee's usual compensation
b : a premium (as of stock) given by a corporation to a purchaser of its securities, to a promoter, or to an employee
c : a government payment to war veterans
d : a sum in excess of salary given an athlete for signing with a team
所以boon是对某些需求的福利,而bonus是额外的,意外的福利.