From what I gather from the chapter;
- KROOM is kinda like a ROOM which Law can coat on his blade.
- He can extend the KROOM coated thing but there's a limit since he chose to leap onto Meme's back in ch. 1030 instead of just extending it.
- Anesthesia is the process of incision. And like the name suggests, it renders the target immobile once it touches given how Meme didnt move a muscle during both the incisions.
- Shock Wille is the actual attack and can create severe internal damage from the shock waves.
But the lack of creativity from Oda is apparent ngl.