Difference between Symantec Endpoint and Protection Suite License

Hi,

I have a doubt regarding the license type that symantec offers. We recently renewed licenses and two license keys were of different type.

One was called Symantec End Point Protection 12.1 per User Renewal Essential, and the second one was called Symantec Protection Suite Enterprise Edition 4.0 Per User Renewal Essential 12 Months.

I would like to know what is the difference between the licenses in terms of features each one offers since I see that there is a significant price difference.

Thank You.