People like lists and hill walkers are no exceptions !
There are various lists covering the hills in Scotland, and the main ones are shown below
Mountains over 3,000 feet (914 metres) in height are called the Munros. There are 283 and over 4,000 people have climbed all of them, with one person having done them all 14 times - me !
The Corbetts are the Scottish hills that are between 2,500ft to 3,000ft in height and with a drop of 500ft on all sides. There are 221 Corbetts.
Scottish hills between 2000ft-2500ft in height and with a drop of 150m on all sides. There are 224 Grahams
Hills in the Scottish Lowlands with a height of 2000ft and over.
Any hill in Scotland with a drop of 150m on all sides.
More information on these categories can be found in the Database of British Hills