Combined from Craft / Work [工] + Arrow with string [弋] to compose 式: represents "ceremony".
stock (company)
ceremonial hall, place of ceremony (e.g. marriage)
form, method, system
style, form, pattern
ceremony, rite, ritual, service
form, formality, format, math expression
formula, formality, official
funeral
equation
equation, formula, ceremony
due form, official, formality