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

賀意[gai] congratulatory feeling
賀宴[gaen] banquet
賀詞[gashi] congratulations
賀詞交換[gashikoukan] New Year greetings (parties)
賀状[gajou] New Year's card

賀正[gashou] A Happy New Year!
恭賀新年[kyougashinnen] Happy New Year!
謹賀新年[kingashinnen] Happy New Year!
慶賀[keiga] congratulation
佐賀県[sagaken] Saga prefecture (Kyushu)