assurance 与guarantee的区别

assurance

n.
确信, 把握, 信心, 自信
承诺, 担保, 保证
厚颜; 大胆傲慢
[英](人寿)保险【律】财产转让(书)

assurance coefficient [factor]
安全系数, 保险系数
I have full assurance of his honsety.
我完全相信他的诚实。
He answered all the questions with assurance.
他胸有成竹地回答了所有的问题。
He gave me a definite assurance that the repairs would be finished tomorrow.
他给我确切保证, 修理将于明日完工。
He had the assurance to claim that he could speak ten foreign languages perfectly.
他竟狂妄地宣称他能流利地讲十种外语。

习惯用语
give sb. an assurance that ...给某人保证
have full assurance of 完全相信
have (an) easy assurance of manner 有悠然自信的态度
make assurance doubly sure 加倍小心, 特别慎重
make assurance double sure 加倍小心, 特别慎重
shake sb. 's assurance 动摇某人的信心
with assurance 有把握地, 自信地

http://www.m-w.com/dictionary/assurance

guarantee

n.
保证, 担保, 保