Mount Everest (pronounced "Eve-Rest", by the way, as that's how the man after whom the mountain was named pronounced his name...) is a "big" mountain that rises more gradually than some other mountains, thus it reaches it height less abruptly, especially compared to some of the surrounding land. It's average grade, at least in the upper half of it, is only about 23% - compared to very steep mountains like the world's second highest, K2 in the Karakoram Mountains of Pakistan, which has an average grade of nearly 45%, Everest seems not so steep.
They are names of mountains. Mount Everest Mount McKinley
Mount Everest is not in a forest, it is in the Himalayan mountains.
Mount Everest is in a group on mountains called the Himalayas.
The mountains next to Mount Everest are Lhotse and Nupste.
Mount Everest is in the Himalayan (Himalayas) mountains
Mount Everest is in a range of mountains called the Himalayas.
Mount Everest is associated with the Himalayan mountains.
Mount Everest is in a chain of mountains called the Himalayas.
Mount Everest belongs in the Himalayan mountains
Mount Everest is in the Himalayas.
Mount Everest can be found on the border of Nepal and Tibet in the Himalayan mountains
Mount Everest is the highest mountain in the world. The Himalayan mountains is a chain of mountains where Mount Everest is.