Cnoc na hUilleann

A Hump (Hundred and upwards Metre Prominence) is any mountain in Britain or Ireland with a prominence over 100m, regardless of height.

A Simm is any mountain in Britain or Ireland with a prominence over 30m and a height above 600m.

An Arderin is a mountain in Ireland with a height greater then 500m and a prominence greater 30m.

A Myrddyn Dewey is a peak in Ireland with a height between 500m and 609m and a prominence greater then 30m.

A Vandeleur-Lynam is a peak in Ireland with a height greater then 600m and a prominence greater then 15m.