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

悪相[akusou] evil countenance
位相[isou] phase (in science)
位相幾何学[isoukikagaku] topology
位相空間[isoukuukan] phase space (physics)
為替相場[kawasesouba] exchange rates

遺産相続[isansouzoku] inheritance
一子相伝[isshisouden] transmission of the secrets of an art, craft, trade or learning from father to only one child
印相[inzou] mudra
運輸相[unyushou] Transport Minister
卸相場[oroshisouba] wholesale price