诺言 (nuò yán): สัญญา

He made a promise to me, saying that no matter what happened, he would stand by my side.

Since you've already agreed to take your child, you should keep your promise and take him to the zoo this weekend.

That company broke its promise and didn't pay the employees' salaries on time, so everyone was very angry.

On their wedding day, they made promises to each other to love and cherish each other for a lifetime and never part.