一際[hitokiwa] conspicuously
学際的[gakusaiteki] interdisciplinary
真際[magiwa] on the verge of
金輪際[konrinzai] the deepest bottom of the earth
交際[kousai] company

交際家[kousaika] sociable person
交際嫌い[kousaigirai] unsociable
交際好き[kousaizuki] sociable
交際国[kousaikoku] friendly powers
交際社会[kousaishakai] society

価額[kagaku] valuation
額が少ない[gakugasukunai] insufficient (money, etc.)
額ぶち[gakubuchi] frame (e.g. picture frame, decorative door frame, etc.)
額面[gakumen] face value

額面割れ[gakumenware] drop below par
割当額[wariategaku] allotment
巨額[kyogaku] great sum
金額[kingaku] amount of money