A loop kill in table tennis is a type of loop that focuses on generating more power rather than spin to ‘kill’ or end the rally and win the point. It has more spin than a smash but more power than a regular loop. Instead of maximizing the tangential contact between the ball and the rubber, adjust the angle of your racket to include a slight direct contact with the ball, which adds extra power.
Brush
Brush in table tennis is a general term of hitting the ball on its surface in a tangential (horizontal) direction with the primary goal of generating spin. Loop is a type of stroke that “brushes” the ball.