keep one's promise和keep one's words的区别

问题描述:

keep one's promise和keep one's words的区别

keep one's promise:遵守诺言;信守承诺;履行承诺 遵守诺言
keep one's promise/words:遵守某人的诺言
keep one's promise/appointment:信守承诺
所以两个词组应该没有什么不同,表达的意思差不多.个人觉得keep one's words显得没有keep one's promise正式,严肃.