正月 (しょうがつ) New Year, New Year's Holidays, Japanese New Year
元旦 (がんたん) New Year's Day, New Year's Morning
謹賀新年 (きんがしんねん) Happy New Year, Happy New Year!
明けましておめでとう (あけましておめでとう、not on WK) Happy New Year
良いお年を (よいおとしを、not on WK) Have A Happy New Year
年賀状 (ねんがじょう) New Year's Card, New Year's Greeting Card
雑煮 (ぞうに) New Year's Dish, Mochi Soup