Catharsis or Catharsism

Self-Initiated project has gotten me engrossed this week, I even went to the library! Got books out! And read them!

Though I'm stuck on whether the purging of emotion is a practice or action. i.e

-ism or -is.

fuck it, I'm going with -ism. Sod the oxford dictionary!

Apparently, this is what google thinks is purging of emotion.