In reply to Mike Goldthorp:
Stamina: The physical ability to recover, either enough energy for the next move/s or for another attempt.
Endurance: The ability to endure massive pump, pain or even fear and carry on, so more like a resilience, a mental head space of total commitment and confidence.
Generally if the route has rests, it would be classes as a stamina as you have to recover on the rests to complete the route. If it has no rests and requires you to just keep on pulling till the very top, then it would be classed as an endurance route.
Personally stamina beats endurance but ideally you want both, really depends on the type of climb you want to climb
Post edited at 15:36