Increment is the unit of measure or the process of increasing. Sometimes there is no difference and they are interchangeable, but 'increment' indicates an increase in regular steps, whereas 'increase' has a wider, more general usage. This means that sometimes only 'increase' is the correct word to use.
Pidurutalagala , or Mount Pedro in English, is an ultra prominent peak, and the tallest mountain in Sri Lanka, at 2,524 m (8,281 ft). Mount Pedro is located close to the city of Nuwara Eliya, and is easily visible from most areas of the Central Province. It is situated North-North-East from the town of Nuwara Eliya.
Oh, yeah, so the highest free-standing mountain in the world is Mount Kilimanjaro in Africa, at 19,341 (5,895 m.) feet above sea level (ASL). Free-standing means it stands alone and is not part of a mountain range. Usually these are volcanic mountains. The tallest mountain when measured from its base is Mauna Kea in Hawaii, at over 33,000 feet (10,058 m.)-- however its base is many miles below the ocean surface, and only 13,796 feet (4,205 m.) of that is above sea level!