electronic device vs device

electronic device and device both are nouns.

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

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

electronic device (noun)	device (noun)
a device that accomplishes its purpose electronically	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