We're both wrong. "Battery" is the what the charge should be. Any unwanted and "violent" touching is battery (jurisdictions vary wildly of course). "Assault" is me telling you I'm going to beat your ass. Can't believe I mixed those up. 🙄
In any case, the notion of harm is a factor, but no harm has to occur to be charged. SOURCE: Spent the weekend in jail for admitting to pushing my wife. Battery. Got off, but still, had to spend 2-days with a bunch of animals.
Never speak to the cops!