As a Noun: 1. The careful watching of something or someone to make sure everything happens correctly. English = supervision. 2. The careful watching of something, especially by an organisation such as the police or the army. English = surveillance. 3. A person who supervises activities or people, especially workers or students. English = supervisor. 4. A person who looks after property to make sure it is not broken into, or things stolen or damaged; the service they provide. English = security guard; security. 5. Someone who has been legally appointed to look after the affairs of another person, for example a child or someone who is mentally ill. English = guardian. 6. As a Verb or Adjective: 1. To make sure that an activity happens correctly or that a person is behaving correctly by keeping careful watch over them. English = supervise. 2. To make sure people, especially children or students, are behaving correctly and do not come to any harm. English = watch over, look after, take care of. 3. To keep a careful watch over things to makes sure they are not stolen or damaged. English = look after, keep an eye on.