DVB-RCS and DVB-S2?

[MRW]

Satellites... I can't seem to differentiate between DVB-RCS and DVB-
S2.

According to the fact sheet, DVB-RCS is a standard for two-way
communications that involves a hub and one to many satellite
terminals. DVB-S2 is described as a digital satellite transmission
system.

So does DVB-RCS involve the rules for communicating using satellite
terminals and hub and DVB-S2 is the means to "carry" this
communication?

Thanks!