A mistake, fault, or error — an indiscretion or lapse in judgment or action.
彼は自分の過ちを素直に認めた。
He frankly admitted his mistake.
新人は多くの過ちを犯しながら学んでいく。
Beginners learn by making many mistakes.
過ちから学ぶことが大切だ。
It's important to learn from one's mistakes.