囱, a compound ideographic character of chimney, serves as phonetic component to form characters. Most of the characters formed by the phonetic component have the same pronunciation cōng.
Characters formed by the phonetic component chimney 囱
骢/驄 璁 悤 樬 漗 蔥 蟌 熜 have the same pronunciation cōng
窗 牕 have the same pronunciation chuāng
憁 còng