• 式場しきじょう — ceremony hall
• 式典しきてん — formal ceremony
• 形式けいしき — format, formality
• 和式わしき — Japanese style
• 方式ほうしき — method, system
• 洋式ようしき — Western style

式 is built from the 弋 (shikigamae) radical, representing ceremony or rule, and the phonetic component 工 (こう). It conveys the idea of a formal pattern, method, or ritualized way of doing something.