Off-trail hiking is often called 'bushwalking', 'bushwhacking' or 'bush-bashing'. Overnight hiking is more specifically called 'backpacking'. The word 'hiking' is understood in all English-speaking countries, but regional terms also exist. In the United Kingdom, the activity is often simply called 'walking'. Australians use the term bushwalking for both on- and off-trail hiking. New Zealanders commonly employ the word tramping, particularly for overnight trips. Hiking in the mountainous regions of Nepal and India is sometimes called 'trekking'.