* Complimentary means "given free of charge" or "expressing admiration."
* Example: "The hotel offered a complimentary breakfast."
* Example: "She received many complimentary remarks on her performance."
* Complementary means "enhancing or completing something else" or "fitting well together."
* Example: "The colors in the painting were complementary."
* Example: "Their skills are complementary; she's great at design, and he's great at marketing."
Here's a handy mnemonic:
* Think of "complimentary" as "compliment" + "ary" (meaning "related to"). So it's something given as a compliment.
* Think of "complementary" as "complete" + "mentary" (meaning "related to"). So it's something that completes or enhances something else.
Remember, complimentary is about being free or giving praise, while complementary is about things fitting together well.