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

此の頃[konokoro] recently
一頃[hitokoro] once
何時頃[itsugoro] about when
近頃[chikagoro] lately
月頃[tsukigoro] these past months

見頃[migoro] best time to see
頃合い[koroai] suitable time
頃刻[keikoku] short period
今頃[imagoro] about this time
使い頃[tsukaigoro] handy