Complement or compliment?

A complement completes something; a compliment is kind praise.

complement
The wine was a perfect complement to the fish.
compliment
He paid her a compliment on her garden.

To rememberA complement completes; a compliment says I like it.

NotThanks for the nice complement!

SayThanks for the nice compliment!

WhyPraise is a compliment, with an i.