書く
かく · kaku · JLPT N5 · verb-godan
to write
✍️ kaku: the pen goes kak-kak as it scratches across the page
Kaku sounds like a nib scratching paper: kak, kak. The kanji 書 is a hand holding a brush above a surface being marked, and it is the same character used in 辞書 (jisho, dictionary) and 図書館 (toshokan, library).