As well as the motorcycle sport, "scrambling" is a sort of climbing that's less serious than using ropes etc. but more serious than just hill-walking.
I should have thought of that, as I used to do it a lot when I was younger!
My late husband used to participate in motorcycle scrambling. (He thought he was James Hunt) but sadly he had an accident and smashed his knee. The motorcycle was a write off and he never turned to the sport.
He thought it was funny going through security at airports when the metal in his leg used to set the alarm off 😀