When you disagree with someone, you don't have to call them names, attack their personality or physical appearance or sexual performance. Verbal abuse involves all this plus foul language and more. Verbal abuse is designed to diminish, not disagree.
No no.. Verbal abuse is not about name calling or being mean during an argument it's not even about someone trying to hurt your feelings out of anger. Verbal abuse has to do with the abusers way of thinking and his abuse can come out in many forms in an argument. He could be trying to confuse you as you make your point, or twisting your words around, using sarcasm & laughing at you, maybe he is just staring at you while you try to communicate. It's hard to recognize these abusers because they do so many things to make YOU feel like the crazy, confused one. The way you know the difference is like this: At the core of a verbally abusive partner is a desire to control you and he is trying to pluck out your view of reality and replace it with his own. I wish there was another name for it because everyone thinks verbal abuse has to do with words and it does not. Read -Why Does He Do That by Lundy Bancroft If you are in this kind of relationship.
When your verbally abused, someone wants to make it a point of belittling for the sake o huring you. Disagreeing with someone means you still have respect for the other person on the opposite side.
I'd imagine it becomes verbal abuse when one person becomes angered by the opposing view and reacts negatively to it, rather than discuss it rationally, this could include getting in someone's face, shouting, pointing, scowling and other body language, threats, intimidation, name calling, sarcasm. Although some of the things that I described are not verbal but physical, when accompanied with words it can distinguish between a disagreement and abuse.
Disagreeing is not agreeing. Verbal abuse is where you make it personal, like with name-calling, put-downs, stuff like that. Disagreements can be spicy, verbal abuse is just pukey.
respecting the other's opinion .
I believe that that can be very relative. It is up to the persons involved in an arguement to always make clear their feelings however not taking the low road of hurting the other involved when they happen to not feel the same. It is difficult but quite imperative in an adult conversation.