Names of software locations for OEM

A couple weeks ago, somebody asked a for a recommendation on where to install software for the various components that make up OEM.

I really appreciated that because there was little information in the installation guides............at least little that made sense to me.

To follow that up.............I would like to know if anybody knows of a place where the various "names" of the software homes is defined.

After the first question, I started writing down the names that I was faced with, in documentation, MOS notes, other.

Here is what I came up with (no particular order):

a)  OMS_CORE_HOME