How can you differentiate between addition and condensation polymerization?

addition polymerization is a type of polymerization in which a large number of molecules of same or different monomers add to one another leading to the formation of form micro molecule with the elimination of simple molecules HS water. condensation polymerization is a type of polymerization on which two or more bifunctional molecules undergo a series of condensation reaction resulting in the elimination of a noble of simple molecules