noun
calligraphy paper
Paper specifically designed for Japanese calligraphy (shodō), often absorbent and sized for practice or artwork.
書道紙に筆で文字を書く。
Write characters with a brush on calligraphy paper.
和紙 is traditional Japanese paper in general, used for many purposes beyond calligraphy. 書道紙 is a subset specifically for calligraphy.
Compound of 書道 (shodō, 'calligraphy') and 紙 (shi, 'paper').