fire on the opposite shore, no skin off one's nose, someone else's problem

頂点: summit, vertex, apex

調査: investigation; examination; inquiry; enquiry; survey / 潮差: tidal range

省庁: Ministries and Agencies / 象徴: symbol / 小腸: small intestine / 正長: Shouchou era / 消長: good and bad

調和: harmony, accord, union, congruence

手帳, 手帖: notebook

可聴: audible

課長: manager / 花鳥: flowers and birds / 可聴: audibility / 家長: head of the family

長じる: to grow into adulthood; to excel

有頂天: ecstasy, joy