French word cassage comes from French -age, French casser (To break. To break up (with somebody).)

Detailed word origin of cassage

Dictionary entry	Language	Definition
-age	French (fra)	(rare) Forming collective nouns.. Forming nouns with the sense of "action or result of Xing" or, more rarely, "action related to X".. Forming nouns with the sense of "state of being (a) X".
casser	French (fra)	To break. To break up (with somebody).
cassage	French (fra)	Breaking.

Words with the same origin as cassage