Pyramidal peak
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A pyramidal peak, sometimes called a glacial horn in extreme cases, is an angular, sharply pointed mountain peak which results from the cirque erosion due to multiple glaciers diverging from a central point. Pyramidal peaks are often examples of nunataks.
The Matterhorn, a classic example of a pyramidal peak.
Kinnerly Peak in Glacier National Park in the U.S. state of Montana
Alpamayo in Huascarán National Park, Peru
Artesonraju in Huascarán National Park, Peru
Mountain
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A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (980 ft) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges.
Mount Everest, Earth's highest mountain
Chimborazo, Ecuador, whose summit is the point farthest away from the Earth's center
Fuji volcano
Illustration of mountains that developed on a fold that has been thrust