Charcoal is a soft black substance that is left after something is burnt. You can use charcoal to draw with, like in the picture. Charcoal is messy, and you have to be careful not to get black fingerprints on everything when you are working with it.
Charcoal is also used as the name for a color that is very dark grey, almost black.
Scientific name: beta vulgaris
Chard, also known as Swiss chard or silverbeet, is a leafy green vegetable with red or white stems. It is best eaten fresh when it is young.
Something is charred if it has been blackened a little by heat, usually from being cooked. The picture is of some charred peppers.
A chart is a way of visually showing some information. Charts are often used to compare the amounts of two or more things in an easy to understand way.
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.