blower vs hub

blower and hub both are nouns.

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

blower (noun)	hub (noun)
large aquatic carnivorous mammal with fin-like forelimbs no hind limbs, including: whales, dolphins, porpoises, narwhals	the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes
a device that produces a current of air	a center of activity or interest or commerce or transportation; a focal point around which events revolve
a fan run by an electric motor