Where does “հակահեղափոխություն” come from?

հակահեղափոխություն (Armenian) comes from Armenian հեղափոխություն, from Old Armenian յեղափոխութիւն, from Old Armenian յեղափոխեմ, from Old Armenian փոխեմ, from Old Armenian փոխ, from Akkadian ??? — exchange, substitute, replacement; loan.

հակահեղափոխություն (Armenian): counterrevolution

Definitions

counterrevolution

Ancestry of “հակահեղափոխություն”, step by step

Step	Language	Word	Meaning
1	Armenian	հեղափոխություն	revolution
2	Old Armenian	յեղափոխութիւն	change, transformation, alternation, conversion
3	Old Armenian	յեղափոխեմ	to change, to convert, to transform, to modify, to alter
4	Old Armenian	փոխեմ	to change, to convert, to transform, to modify;...
5	Old Armenian	փոխ	loan, borrowing; anthem, response, antistrophe,...
6	Akkadian	???	exchange, substitute, replacement; loan

Every word from Akkadian ??? →Every word from Old Armenian փոխ →Every word from Old Armenian փոխեմ →