Food containers are items used to store food for later use. Common examples include cans, tins, jars, and cartons. Cans are typically made of metal and have a lid that CAN be opened and closed. Tins are similar to cans but are usually made of TIN-plated steel. Jars are usually made of glass and have a lid that CAN be screwed on and off. Cartons are usually made of cardboard and have a lid that CAN be opened and closed.