大事 だいじ おおごと important; serious; crucial adj-na valuable; precious adj-na serious matter; major incident; matter of grave concern; crisis n great undertaking; great enterprise; great thing n safe; OK adj-na serious matter; major incident; matter of grave concern; crisis n Intermediate II ➥
従事 じゅうじ engaging in (work); pursuing (e.g. studies); following (a profession); being involved in n vs Intermediate II ➥