gun worm vs device

gun worm and device both are nouns.

Word	Noun	Adjective	Verb	Adverb
gun worm	Yes	No	No	No
device	Yes	No	No	No

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

gun worm: a corkscrew-like device used to remove unspent charges from the barrel of a musket.
device: an instrumentality invented for a particular purpose

gun worm (noun)	device (noun)
a corkscrew-like device used to remove unspent charges from the barrel of a musket.	any clever maneuver
	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