書き分ける

プログレッシブ和英中辞典(第4版)

かきわける【書き分ける】

子供にはカタカナの「ツ」と「シ」をはっきり書き分けるのは難しい
It is difficult for small children to 「write the difference between “tsu” and “shi” distinctly in katakana [show the difference between “tsu” and “shi” when writing katakana].

あの作家は小説とエッセイを巧みに書き分ける
The writer deftly switches between different writing styles for her novels and her essays.

出典　小学館「プログレッシブ和英中辞典(第4版)」