First is the distinction between the moves "Shut someone down" and "Lash out physically".
"Shut someone down" is anything you do to arrest or emotionally hurt someone. Usually this is done with harsh words, but the rules specifically state that is also includes physical attacks that aren't intended to cause major bodily harm -- the example given is shoving someone against a locker.
"Lash out physically" is for when you *are* trying to cause major injury to someone. The examples given in the text is biting someone with wolf fangs or shoving someone off a balcony.
It's a major, major escalation from "Shut someone down".
And imo, the fact that the rules for each move implicitly construct the possibility of this as escalation is really, really cool.
In the paragraph or so long definition of two Moves, the game has established, permitted, and contextualized an entire spectrum of physical violence.
Anyway, the rules for Monsterhearts are pretty short but do a really impressive job of guiding you towards certain modes of play.
You can get it here, and hey, it's on sale!
https://www.drivethrurpg.com/product/212511/Monsterhearts-2
The other really interesting place this happens in game is with the Sex Move.
All characters have a Sex Move written on your sheet. Basically, when you have sex with someone, something happens to one or both of you. It can be a good, bad, or mixed thing depending on the Skin (character class/archetype).