Assure, ensure, and insure
Assure is the only one of the three words that means “to reassure someone or to promise.” أكّد تعهد؛ طمئن
I assure you that the chocolate is fresh.
Ensure chiefly means “to make certain or to guarantee.” ضمن أكَّد
He must ensure that the effect is eye-popping.
Insure can be interchangeable with ensure in some cases, but it is easiest to keep these words straight by reserving insure for references to insurance. أَمَّنَ
I need to insure my car.
The definitions are different in British English: in Britain, assure can mean “to insure against a loss.”