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

サンプリング周波数[sanpuringushuuhasuu] sampling frequency
波蘭[poorando] Poland
マイクロ波[maikuroha] microwave
ミリ波[miriha] milli-wave
圧力波[atsuryokuha] pressure wave

伊呂波[iroha] traditional ordering of the Japanese syllabary
浦波[uranami] (seaside) breakers
横波[yokonami] side (transverse) wave
音波[onpa] sound wave
寒波[kanpa] cold wave