Ceramics are brittle, strong and non-conducting materials. Ceramics are typically compounds consisting of metals covalently bonded to oxygen, nitrogen or carbon. Ceramics are used for high temperature applications, abrasives, transparent windows and pottery. Ceramic pieces are generally made through extrusion, slip casting, or compression molding. A polymer may have one type of repeating unit of many different types of repeating units.
Polymers are usually carbon based.
Polyethylene is a long chain of carbons bonded together in a straight line. Hydrogen atoms are bonded to the rest of the sites. ABA is a copolymer with different repeating units. Polymers are used for a large variety of items. Trash bags, pot holders, wire insulation, computer chips, packing materials, car doors, and many other items are all made of polymers.