两个词发音相同，都是[ˈkɒmplɪment]，拼写也相似，但是，二者的意义则完全不同。
1、含义区别：
compliment[ˈkɑːmplɪmənt , ˈkɑːmplɪment]
n.恭维;称赞;赞扬;致意;问候;祝贺
vt.赞美;称赞;钦佩
adj.赞美的;表示钦佩的, 免费的;赠送的;
complement[ˈkɑːmplɪment , ˈkɑːmplɪmənt]
vt.补足;补充;使完美;使更具吸引力
n.补语;补充物;补足物;足数;足额;补足语
adj. complementary 互补的;补充的;相互补足的
2、巧记秘籍：
i就像一个大拇指的样子，自然就是： compliment某人在表达对别人的赞赏，或者因为某件事而表扬别人。
e就像一个装满的包裹的样子，自然就是：complement某人的补充物，补语;补足物;足数;足额;补足语啦。
3、用法：
（1）compliment
动词：赞美；称赞；钦佩compliment sb (on sth)
作名词： 赞扬；称赞，为不可数名词。致意；问候；祝贺，为可数名词。
The airline thanked the passengers for their help and complimented the captain on his initiative.
航空公司对乘客的帮助表示了感谢，并主动表扬了机长。
They complimented me on the way I looked each time they saw me.
每次见到我，他们都称赞我的外貌。
I received several compliments on the condition of my skin
好几个人夸我的皮肤保养得好。
It mustn't sound like a contrived compliment.
它听起来不能像是虚情假意的恭维。
It's a great compliment to be asked to do the job.
获聘请做这项工作是一项极大的荣誉。
She complimented him on his excellent German.
她夸奖他德语棒极了。
She complimented me on my English.
她夸奖我的英语好。
You can do no harm by paying a woman compliments...
对女人说些恭维话没有坏处。
She may be fishing for a compliment and welcome your reassurance
她也许是在拐弯抹角地想获得称赞，希望得到你的肯定。
Give my compliments to your lovely wife when you write home.
写信回家的时候，代我问候你可爱的妻子。
My compliments to the chef!
请向厨师代为致意！
Compliments of the season!
谨致节日的祝贺！
Compliments for Christmas or the New Year！恭贺圣诞节或新年。
Please accept these flowers with the compliments of the manager.
请接受经理送的鲜花。
Please give this to your boss with my compliments
请把这个给你的老板，算是我的一点心意。
She made some very complimentary remarks about my English.
她对我的英语赞赏有加。
He paid her a compliment by saying her cake was the best he had eaten.
他称赞她说她的蛋糕是他吃过的最好的。
He’s the kind of man who’s fond of paying compliments to other men’s wives.
他是那种喜欢恭维别人妻子的男人。
There was a complimentary basket of fruit in our room.
我们房间里有一篮免费赠送的水果。（该词亦含免费赠送之意）
（2）complement
vt.补足;补充;使完美;使更具吸引力
n.补充物;补足物;足数;足额;补足语; 补语;
adj. complementary互补的;补充的;相互补足的
We complement one another perfectly.
我们相互取长补短，堪称完美。
The team needs players who complement each other .
球队需要能够相互取长补短的队员。
There will be a written examination to complement the practical test...
会有笔试作为实践考试的补充。
She used photographs to complement the text of the news story.
她用照片补充新闻报道的内容。
Strawberries and cream complement each other perfectly.
草莓和奶油相得益彰。
The music complements her voice perfectly.
这音乐与她的声音相得益彰。
The recipe was delicious and the wine complemented the food beautifully.
菜很好吃，红酒和食物也很配。
Political knowledge is a necessary complement to science in approaching solutions to these problems.
在寻找解决这些问题的方法时，需要有政治知识作为对科学知识的补充。
当complement 意为”补充物“时，后面通常跟介词 to 连用。
We've taken our full complement of trainees this year.
我们今年接收的实习生已满员。（n. 足数；足额）
We had a full complement of reporters and photographers along.
我们身边有很多记者和摄影师。（n. 足数；足额）
Do you have your full complement of men?
你们人手够吗？（n. 足数；足额）
Two complementary exhibitions are on show at the Africa Centre
两场互为补充的展览正在非洲中心展出。
The team members have different but complementary skills.
队员技术不同但能互补。
Interior design and architecture are two complementary professions.
室内设计和建筑是两门互补的专业。
The school's approach must be complementary to that of the parents.
学校与家长的教育方法必须相辅相成。