filter vs device

filter and device both are nouns.

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

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

filter (noun)	device (noun)
device that removes something from whatever passes through it	any clever maneuver
an electrical device that alters the frequency spectrum of signals passing through it	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

filter (verb)	device (verb)
remove by passing through a filter
pass through
run or flow slowly, as in drops or in an unsteady stream