blower vs device

blower and device both are nouns.

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

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

blower (noun)	device (noun)
large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals	any clever maneuver
a device that produces a current of air	an instrumentality invented for a particular purpose
a fan run by an electric motor	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