Quote without comment:
From Anu's weekly newsletter -
[qupte] From: Peirce Hammond (peirceiii yahoo.com)
Subject: Proem

There is a little known category of words that get confused with the words that get confused with well known words. So today's word, proem is readily confused with poem. But consider the word preom,[E.A.] easily taken to be a typo when one surely intended to write proem. That, however, would be an error when one was referring to the technique of rapid free association to clear one's mind just prior to meditation -- preom.
Peirce Hammond, Bethesda, Maryland [/quote]