검사 is 檢事. 検査 has the same pronunciation but means “to inspect”. Not sure if you can read Korean but here is the link that talks about differences between the t

검사 is 檢事. 検査 has the same pronunciation but means “to inspect”. Not sure if you can read Korean but here is the link that talks about differences between the two hanjas: https://m.ch.yes24.com/article/view/33205 https://m.ch.yes24.com/article/view/33205