The Double Pole Single Throw DPST relay is the equivalent of 2 SPST switches (NO Normally Open and NC Normaly Closed) and can be used to switch 2 different loads. As you can see in the schematics ...

The MM5620 switch provides the highest performance and data rates for high-speed differential data applications. It offers parallel testing on space-constrained final test and probe test for graphics, ...

Throw it the other way, and you complete the path. This switch has four terminals, just as two separate single-pole switches do in total. You can see that all single-pole switches are necessarily ...

single pole double throw (SPDT) switch connects one input to one of two outputs allows switching between two circuits, unlike SPST version which only connects/disconnects one circuit ...