SOC Encounter includes the routing capability (Nano Route) whereas First Encounter doesn't. You need separate license for Nano-Route when you use First Encounter.
Re: What is difference Cadence SOC encounter and first encou
This file basically contains all the details about various cadence tools
You can urself find the difference between cadence soc encounter and first encounter.
u can atleast know what are the various modules of the two eda tools