What is difference between end event and a terminate the event?

https://docs.appian.com/suite/help/20.3/End_Event.html#results

A process can have multiple End Events. If so, the different branches of a process remain active until each active path reaches one of the multiple End Event nodes. In such cases, a Terminate Process event can be used to stop all branches of a process, even if one or more branches have not yet reached an End Event node.

Can we have 2 or more terminal end nodes in our process, or does it defy best practises? 

Unknown said:

Can we have 2 or more terminal end nodes in our process, or does it defy best practises? 

You can have as many terminating end events in your process model as you need, AFAIK there is no best practice to limit the amount of these nodes (other than keeping your total count of nodes less than 50).  I will add them based on organization, if there is no end event nearby in the modeler to use, I'll add another instead of running a path across multiple swim lanes to get to one, etc.

Unknown said:

Can we have 2 or more terminal end nodes in our process, or does it defy best practises? 

You can have as many terminating end events in your process model as you need, AFAIK there is no best practice to limit the amount of these nodes (other than keeping your total count of nodes less than 50).  I will add them based on organization, if there is no end event nearby in the modeler to use, I'll add another instead of running a path across multiple swim lanes to get to one, etc.