Kihon

Kihon means "basics" — the foundational drills of karate: stances, punches, blocks, kicks, repeated over and over in straight lines across the dojo.

It's the part that looks the most boring from outside and matters the most inside. Every kata and every kumite technique is built from kihon; if the basics are sloppy, nothing above them works. Think of it as the scales and arpeggios of karate.