六書

Six Methods of forming Chinese characters, according to Han dictionary Shuowen 說文|说文 - namely, two primary methods: 象形 (pictogram), 指事 (ideogram), two compound methods: 會意|会意 (combined ideogram), 形聲|形声 (ideogram plus phonetic), and two transfer methods: 假借 (loan), 轉注|转注 (transfer)