A carpenter is someone who works with wood. Carpenters might build houses, or furniture, or carve beautiful things out of wood. The tools you are most likely to see a carpenter using are a hammer and saw.
A chauffeur, or just driver, is someone who drives cars around for a living. A chauffeur is usually someone that drives a more "fancy" kind of car, like a limousine.
A chiropractor is someone who manipulates the bones and muscles in your body. These manipulations can help restore balance in the body and make you feel better.
Clowns are performers in fancy dress, and are usually found in circuses and doing street performances. They usually wear a very brightly coloured outfit, a silly hat, big shoes, a coloured wig and face paint. They usually do very silly things to make people laugh.
A conductor is someone who directs an orchestra or other group of musicians or singers by gestures, usually by waving their hands in a special way, or waving a small stick called a baton.
A contortionist is someone who can bend their body into positions that most people cannot do. Contortionists are often part of a circus act, or perform on the street for money.
A cook is someone who prepares and cooks food for a living. A cook in a higher class restaurant is usually called a chef. Cooking is also the process of preparing food to eat by using heat, for example you need to cook potatoes before you can eat them.