paper feed vs device

paper feed and device both are nouns.

Word	Noun	Adjective	Verb	Adverb
paper feed	Yes	No	No	No
device	Yes	No	No	No

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

paper feed: a device for inserting sheets of paper into a printer or typewriter
device: an instrumentality invented for a particular purpose

paper feed (noun)	device (noun)
a device for inserting sheets of paper into a printer or typewriter	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