**Distance** is a numerical description of how far apart objects are. In physics or everyday discussion, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and provides a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other. In most cases, "distance from A to B" is interchangeable with "distance between B and A".

Read more about Distance: Distance Versus Directed Distance and Displacement, Other "distances"

### Famous quotes containing the word distance:

“Honor the spirits, but keep your *distance* from them.”

—Chinese proverb.

Confucian Analects.

“For time is the longest *distance* between two places.”

—Tennessee Williams (1914–1983)

“One sees qualities at a *distance* and defects at close range.”

—Victor Hugo (1802–1885)