This person runs a business, sells things, or manages a company. They usually work in an office or a shop, their job is well-paid but difficult.
businessman/businesswoman
This person cooks food in a restaurant or hotel. They work in a kitchen, and their job is fun and creative, but sometimes it is stressful and tiring.
chef
This person takes care of people's teeth and fixes problems like cavities. They work in a clinic or hospital. Their job is well-paid but difficult.
dentist