Yes, you can create workflows for SharePoint lists in SharePoint Designer, but they aren't the most robust workflows you may need for your organization.

SharePoint 2013 workflows for automating common business processes can be deployed as SharePoint apps built using Visual Studio.

Sometimes it might be necessary for an Excel user to share data with SharePoint. Using add-ins it is possible to incorporate data from an Excel spreadsheet into SharePoint Designer workflow, and ...

The task list will create tasks for the approval process and history list will log messages for the workflow. [Click on image for larger view.] Figure 3. Adding BudgetApprovalWorkflow Automatically ...