The fear of heights and the fear of falling are similar and closely related.
However the fear of heights is not the same as a fear of falling and are actually different.
The fear of falling (FOF) which is also referred to and known as basophobia (or basiphobia), is a natural fear and is typical of most humans and mammals,
in varying degrees of extremity.
It differs from acrophobia (the fear of heights), although the two fears are closely related.
Acrophobia is the extreme or irrational fear or phobia of heights, especially when one is not particularly high up. It belongs to a category of specific phobias, called space and motion discomfort, that share both similar causes and options for treatment.
Most people experience a degree of natural fear when exposed to heights, known as the fear of falling.
On the other hand, those who have little fear of such exposure are said to have a head for heights.
A head for heights is advantageous for those hiking or climbing in mountainous terrain and also in certain jobs such as steeplejacks or wind turbine mechanics.
People with acrophobia can experience a panic attack in high places and become too agitated to get themselves down safely.
Approximately 2–5% of the general population has acrophobia, with twice as many women affected as men.
The term is from the Greek: ἄκρον, ákron, meaning "peak, summit, edge" and φόβος, phóbos, "fear".