victory
戡 centers on achieving victory, especially through decisive force or overcoming opposition.
戡 combines 甚 (extreme, great) with 戈 (halberd, weapon), suggesting overpowering force to achieve victory.
The left side 甚 suggests something extreme, and the right side 戈 is a weapon. Picture an extreme weapon that guarantees victory in battle.
For カン, imagine a can of victory: you open a can labeled 'VICTORY' and celebrate. Can -> カン.