To cut and to slash are two different things. Cutting, whatever form of cutting it is, is decisive, with a resolute spirit. Slashing is nothing more than touching the enemy.
Even if you slash strongly, and even if the enemy dies instantly, it is still.. slashing. When you cut, your spirit is resolved. You must appreciate this.
If you first slash the enemy's hands or legs, you must then cut strongly. Slashing is in spirit the same as touching.
When you realize this, they become indistinguishable.
Learn this well!
I just wanted to share with you a fragment of "A BOOK OF FIVE RINGS" (go rin no sho) by Miyamoto Musashi