Violence is a related term of coaction.
In obsolete|lang=en terms the difference between violence and coaction
is that
violence is (obsolete) ravishment; rape; violation while
coaction is (obsolete) force; compulsion, either in restraining or impelling.
As nouns the difference between violence and coaction
is that
violence is extreme force while
coaction is (obsolete) force; compulsion, either in restraining or impelling or
coaction can be (mathematics).