I hope I'm not getting too technical, but the trebuchet was a type of mangonel.
From the telegraph.co.uk
However, Song had expected a trebuchet siege, and made preparations beforehand.
From the en.wikipedia.org
The traction trebuchet is thought to have been developed in China around this time.
From the newscientist.com
An illustration of a trebuchet catapult from the Wujing Zongyao manuscript of 1044.
From the en.wikipedia.org
Soldiers would simply set up a catapult-like device known as a trebuchet.
From the businessweek.com
Make's kit includes almost everything you need in their trebuchet kit.
From the techcrunch.com
Francis High School whose trebuchet was easily more than 15 feet in its resting position.
From the ocregister.com
One of the members brought a trebuchet, or wooden catapult, used to launch the bouquet.
From the thenewstribune.com
The trebuchet is a rotating-beam siege engine, designed to hurl stones over city ramparts.
From the newscientist.com
More examples
Catapult: an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles
A trebuchet (French tru00E9buchet) is a type of siege engine most frequently used in the Middle Ages. It is sometimes called a counterweight trebuchet or counterpoise trebuchet, to distinguish it from an earlier weapon called the traction trebuchet, where men pulling ropes provided the power.
Trebuchet MS is a humanist sans-serif typeface designed by Vincent Connare for the Microsoft Corporation in 1996. It is named after the trebuchet, a medieval catapult. ...
A medieval siege engine consisting of a large pivoting arm heavily weighted on one end. Considered to be the technological successor to the catapult
A heavy stone throwing engine, powered by a large counterweight
War engine developed in the Middle Ages employing counterpoise.
A siege engine that used the force of a counterweight to swing a projectile.
A common Zugzwang position, e.g. White Ke5, Pd4; Black Kc4, Pd5.