「過去 (かこ)」 refers to the past, meaning the time that has already happened. It describes previous events, historical periods, or personal experiences that are no longer current. We often learn from or reflect on the 'kako'. For example: 過去の経験から学んだ。(I learned from past experiences.)

今よりも前の、過ぎ去った時。過去の出来事や経験、歴史などを話すときに使います。