Writing or authoring: the act of composing texts, articles, or manuscripts; often used in formal or professional contexts.
彼は哲学の入門書を執筆した。
He authored an introductory book on philosophy.
論文は学会誌に執筆される予定だ。
The paper is scheduled to be published in the conference journal.
執筆活動の合間に講義を行う。
He gives lectures between his writing activities.