Difference between Polyester and Polyethylene

What is the difference between Polyester and Polyethylene?

Polyester as a noun is any polymer whose monomers are linked together by ester bonds while Polyethylene as a noun is a polymer consisting of many ethylene monomers bonded together; used for kitchenware, containers etc.

We hope you now know whether to use Polyester or Polyethylene in your sentence.