いい年をして[iitoshiwoshite] (in spite of) being old enough to know better
亥年[idoshi] year of the boar
一箇年[ikkanen] one year
一周年[isshuunen] one full year
一年以内に[ichineninaini] within a year

一年間[ichinenkan] (period of) one year
一年生[ichinensei] annual (plant)
一年草[ichinensou] annual (plant)
一年ぢゅう[ichinenjuu] all year round
一両年[ichiryounen] (a) year or two

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