impeller vs vane

impeller and vane both are nouns.

Word	Noun	Adjective	Verb	Adverb
impeller	Yes	No	No	No
vane	Yes	No	No	No

As nouns, vane is a hypernym of impeller; that is, vane is a word with a broader meaning than impeller:

Other hypernyms of impeller include blade.

impeller (noun)	vane (noun)
the blade of a rotor (as in the compressor of a jet engine)	the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft
	mechanical device attached to an elevated structure; rotates freely to show the direction of the wind
	flat surface that rotates and pushes against air or water
	a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it