The word "赊账" is formed by combining the character "赊", meaning to transact on credit, which uses the money-related radical "贝" and the phonetic component "余", with the character "账", meaning account or ledger, which also uses the money radical "贝" and the phonetic component "长". Together, they semantically represent the concept of a credit transaction where "赊" indicates the deferral of payment and "账" refers to the record of that debt.