Scientific name: cinnamomum aromaticum
Cinnamon is made from the bark of a small tree native to Sri Lanka. The smell and taste comes from an oil that the plant makes. Cinnamon is usually sold as a powder in shops, and is simply the bark of the tree ground into powder.
Cinnamon is used in a lot of cooking, mostly in sweet desserts like chocolate dishes, apple pie and many cakes and cookies. Cinnamon is used with sugar on cinnamon donuts.
A circle is a shape with one long, curved edge that is the same size in all directions. Things that are like a circle are often called round. The circle in this picture is a pot, with a cat asleep in it.
Citrus are any trees, or the fruit of any trees in the citrus genus. This includes such trees as oranges, lemons, grapefruit and limes.
A clamp is a device that is used to hold something tightly. Clamps can be used to hold things such as two pieces of wood together so that they can be worked on without them slipping apart. You often clamp materials together after they are glued, to stop any movement before the glue has completely dried.
Clamping generally means something means holding it so that it cannot move.