They are different things. It is a slash or thrust properly done. By properly I mean it has been done from the ' medio proporcional ' position. I would like to be skilful in practice and not a theoretical practicioner, so I would like you to give me one or several rules to be a good fighter, to stab my foe without being stabbed. Every stance you master, must be good to 'short cut' your opponent's.
Every stance can be 'short cut'.
The right angle is good to avoid incoming attacks. The obtuse angle is useful to stop our foe's sword. Three planes of reference are to be considered. Ther first plane is to be defended with the guard. The second one with the force of the sword.