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.
Mauna Kea (in Hawaii) is the world's tallest mountain peak. When measured from the ocean floor to its summit, it's 33,476 feet tall (10,204 meters), but only its top 13,803 feet (4,207 meters) extend above sea level.