There are many synonyms that can be used in place of the term "order processing." Some of these include order fulfillment, sales order processing, and purchase order management. Depending on the context, other potential synonyms might include shipping and receiving, inventory management, or supply chain management. Essentially, all of these terms refer to the process of managing and fulfilling customer orders in a timely and efficient manner. Ultimately, the specific synonym that is most appropriate will depend on the industry and nature of the business in question. Regardless, all of these terms speak to the critical importance of streamlining the order fulfillment process in order to meet customer demands and maintain operational efficiency.