As adjectives the difference between prefatory and proemial
is that prefatory is introductory, preliminary, serving as a prelude or preface while proemial is of or pertaining to a proem or proemium.
prefatory
English
Alternative forms
* (obsolete)
Adjective
(
en adjective)
introductory, preliminary, serving as a prelude or preface.
Usage notes
Rather formal and academic – preliminary is less formal, while introductory is less formal still. Casual alternative is to use some from of start, as in “To start…” or “Let me start by saying…”, as opposed to “By way of prefatory remarks…”.
References
proemial
English
Adjective
(-)
Of or pertaining to a proem or proemium.