Rhododendron or Azalea?

The rhododendrons and azaleas have started to bloom at Sheringham Park, but don't ask me which this is (are azaleas smaller?). I've decided to try to get rid of my 'bungalow legs' by walking up the hill at Sheringham Park on days where it's not raining and I'm not out or doing other things. So today I fitted in a walk between doing some varnishing and painting some metal garden ornaments and a plant stand I bought at a charity shop to practice my mosaics on. Off to the camera club now for a talk about landscape photography.