Zanjutsu (斬術, Swordsmanship; lit. Cutting Technique) is the fighting style for the Zanpakutō (i.e. sword fighting) and is one of the four basic fighting styles of the Shinigami. It is shameful for a Shinigami to not master at least this technique. Captains of the Eleventh Division, and those who carry the title "Kenpachi" (剣八, Sword-Beast), are often masters, or at the very least, specialists, in this fighting-style.
Kendō (剣道, "Way of The Sword") is a modern Japanese martial art of sword-fighting based on traditional samurai swordsmanship.