* Noun: A summit is the highest point of a mountain or hill.
* Example: "They reached the summit of Mount Everest."
* Verb: To summit means to reach the highest point of something, usually a mountain.
* Example: "The team summited the peak after a long and arduous climb."
* Adjective: Summit can be used as an adjective to describe something related to a highest point.
* Example: "The summit meeting of world leaders was held in Geneva."
The most common usage of "summit" is as a noun.