launcher vs device

launcher and device both are nouns.

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

As nouns, device is a hypernym of launcher; that is, device is a word with a broader meaning than launcher:

launcher (noun)	device (noun)
armament in the form of a device capable of launching a rocket	any clever maneuver
a device that launches aircraft from a warship	an instrumentality invented for a particular purpose
	an emblematic design (especially in heraldry)
	any ornamental pattern or design (as in embroidery)
	something in an artistic work designed to achieve a particular effect