委員会: committee

a surname

(music) a pianoforte (piano) / (music) pianoforte (playing softly, followed immediately by playing loudly)

A class representative, in the context of an elementary school or junior high school.

長編: a full-length novel, movie or poem

長時間: long time, long period of time

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

可聴: audible

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

有頂天: ecstasy, joy