Raifuku refers to formal clothes which were used by nobles of the Fifth Rank and higher, and worn at the New Year's court ceremony and new emperor's enthronement ceremony; it was introduced into the Japanese court and modeled after Chinese law.
礼服（らいふく）とは、唐の律令を参考に日本の朝廷に導入された、五位以上の貴族が正月の朝賀や代始の即位式に用いた正装のこと。