@uroojkhan
Processes represent the business processes that you are automating using AEM Forms. At run time, processes are services that run on the AEM Forms Server.
OOTB Forms server provides some components that also form a collection of services delivered as a JAR file once deployed. The state of the components and services determines which services and operations under each service are available to Workbench users so that the operations can be added to process diagrams to represent the activities performed in processes.
You can refer to this one-stop workbench guide [0] as you're developing applications with Workbench.
Hope this helps!
[0] - https://helpx.adobe.com/content/dam/help/en/experience-manager/6-5/forms/pdf/WorkbenchHelp.pdf