“Violence”- when I use the word I am referring to the ethically neutral use of physical force.
As opposed to aggression, which is the use of violence against a person who isn’t currently violating life, liberty, or property, nor credibly threatening to do so. Aggression is the initiation of force (or the initiation of violence).
Self-defense or defense of property can be violent but isn’t aggressive since the other party “started it” by initiating force or violating property rights.
Violence can be good or bad; aggression is something you have no right to commit. Aggression is a facet of archation.