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

印鑑[inkan] stamp
印鑑証明[inkanshoumei] certification of official registration of a seal
鑑みる[kangamiru] to heed
鑑札[kansatsu] licence
鑑識[kanshiki] judgement

鑑賞[kanshou] appreciation (e.g. of art)
鑑定[kantei] judgement
鑑別[kanbetsu] discrimination
龜鑑[kikan] pattern
図鑑[zukan] illustrated reference book