Recommended by Jack O Frost
"COMPLEMENT" and "COMPLIMENT"
"Complement" means to complete or enhance. "Compliment" means to praise or express admiration. Ex.: The sauce complements the dish perfectly. She complimented him on his presentation.
"ENSURE" and "INSURE"
"Ensure" means to guarantee or make certain. "Insure" refers to obtaining insurance coverage. Ex.: Please ensure the door is locked. We need to insure our new car.