catapult vs launcher

catapult and launcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
catapult	Yes	No	Yes	No
launcher	Yes	No	No	No

As nouns, catapult and launcher are synonyms defined as:

catapult (noun)	launcher (noun)
an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles	armament in the form of a device capable of launching a rocket
a plaything consisting of a Y-shaped stick with elastic between the arms; used to propel small stones	a device that launches aircraft from a warship
a device that launches aircraft from a warship

catapult (verb)	launcher (verb)
shoot forth or launch, as if from a catapult
hurl as if with a sling