理科

N1 耳鼻科 jibika otolaryngology N1 理屈 rikutsu theory, reason N1 理性 risei reason, sense N1 理論 riron theory N2 ～科 ～ka family, group, course N2 学科 gakka study subject, course of study N2 外科 geka surgical department N2 原理 genri principle, theory, fundamental truth N2 合理 gouri rational

N4 理 ri / kotowari logic, arrangement, reason N3 科 ka department, course, section