介錯[kaishaku] suicide assistant
交錯[kousaku] mixture
錯覚[sakkaku] optical illusion
錯角[sakkaku] alternate interior angles
錯誤[sakugo] mistake

錯雑[sakuzatsu] complication
錯そう[sakusou] complication
錯乱[sakuran] confusion
錯る[kosuru] to rub
試行錯誤[shikousakugo] trial and error