A cruise missile is basically a small, pilotless airplane. Cruise missiles have an 8.5-foot (2.61-meter) wingspan, are powered by turbofan engines and can fly 500 to 1,000 miles (805 to 1,610 km) depending on the configuration.
A cruise missile's job in life is to deliver a 1,000-pound (450-kg) high-explosive bomb to a precise location – the target. The missile is destroyed when the bomb explodes. Since cruise missiles cost between $500,000 and $1,000,000 each, it's a fairly expensive way to deliver a 1,000-pound package.
The hallmark of a cruise missile is its incredible accuracy. A common statement made about the cruise missile is, "It can fly 1,000 miles and hit a target the size of a single-car garage." Cruise missiles are also very effective at evading detection by the enemy because they fly very low to the ground (out of the view of most radar systems).
https://science.howstuffworks.com/cruise-missile2.htm