Difference between Paratope and Epitope

What is the difference between Paratope and Epitope?

Paratope as a noun is that part of the molecule of an antibody that binds to an antigen while Epitope as a noun is that part of a biomolecule (such as a protein) that is the target of an immune response

We hope you now know whether to use Paratope or Epitope in your sentence.