hiking is a preferred term that originate from canada and the U.S.A.
preferred term for what?
THE WORD HIKING IS OFTEN USED IN UK ALONG WITH RAMBLING, DID YOU HEARED ABOUT I BEFORE?
hiking is a recent thing, right? it's only been around a few years?
other access to land in Northern Ireland. 
Walking is used in the United Kingdom to describe a range of activity, from a walk in the park to trekking in the Alps. The word "hiking" is used in the UK, but less often than walking; the word rambling (akin to "roam") is also used, and the main organisation that supports walking is called The Ramblers. Walking in mountainous areas in the UK is called hillwalking, or in Northern England, including the Lake District and Yorkshire
Hiking
Hiking is the preferred term, in Canada and the United States, for a long, vigorous walk, usually on trails (footpaths), in the countryside, while the word walking is used for shorter, particularly urban walks. On the other hand, in the United Kingdom, and the Republic of Ireland, the word "walking" is acceptable to describe "all forms" of walking, whether it is a walk in the park or backpacking in the Alps. The word hiking is also often used in