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

御手玉[otedama] beanbag
やり玉[yaridama] make an example of
シャボン玉[shabondama] soap bubble
悪玉[akudama] bad character
あめ玉[amedama] candy

一円玉[ichiendama] one-yen coin
烏羽玉[ubatama] jet black
黄碧玉[kouhekigyoku] yellow jasper
火の玉[hinotama] falling star
火玉[hidama] falling star