Are there separate trails for people who want to go hiking instead of walking?

When I looked at the hiking section on here the other day I wondered if there were separate trails for people who prefer to go hiking? You know, more ups and downs, bits to climb up, things like that? More heavy going than a regular low-level walk.

 

Walking in the hills still counts as walking, doesn't it? I'm not sure how hiking is different. To me it's either walking (just your feet), scrambling (need your hands as well), or climbing (ropes etc).

What do you mean by trails - made footpaths? You can do all sorts of walking in the Lake District, but there aren't 'trails' as such, just public rights of way, footpaths, etc.