Duress is a related term of violence.
In obsolete|lang=en terms the difference between duress and violence
is that
duress is (obsolete) harsh treatment while
violence is (obsolete) ravishment; rape; violation.
As nouns the difference between duress and violence
is that
duress is (obsolete) harsh treatment while
violence is extreme force.
As a verb duress
is to put under ; to pressure.