原因

N1 原作 gensaku original work N1 原子 genshi atom N1 原書 gensho original document N1 要因 youin primary factor, main cause N1 原っぱ harappa open field, empty lot, plain N2 原稿 genkou manuscript, copy N2 原産 gensan place of origin N2 原始 genshi origin, primeval N2 原理 genri principle, theory, fundamental truth

N3 原 gen / hara meadow, original, primitive N3 因 in / yo.ru, china.mu cause, factor, be associated with