Low-level bombing is an act of aerial warfare where an aircraft fly at low altitudes to drop bombs on a designated target. There are several terms that are used to refer to low-level bombing, such as nap-of-the-earth, terrain-following, or tree-top level bombing. These terms depict the strategy used by an aircraft to avoid detection from the enemy's radar and fly at low altitudes using the natural terrain as cover. Another synonym for low-level bombing is contour flying, where an aircraft follows the contours of the ground to avoid detection and deliver its payload. Overall, these synonyms describe a risky technique of aerial warfare that requires considerable skill and precise planning.