Chemical phenomenon and Pleomorphism

Chemical phenomenon noun - Any natural phenomenon involving chemistry (as changes to atoms or molecules).

Pleomorphism and chemical phenomenon are semantically related. In some cases you can replace term "Pleomorphism" with "Chemical phenomenon", this terms are similar.

Pleomorphism noun - (chemistry) the existence of different kinds of crystal of the same chemical compound.

Chemical phenomenon and pleomorphism are semantically related. You can use "Chemical phenomenon" instead a noun "Pleomorphism".