imp vs shaver

imp and shaver both are nouns.

Word	Noun	Adjective	Verb	Adverb
imp	Yes	No	No	No
shaver	Yes	No	No	No

As nouns, shaver is a hypernym of imp; that is, shaver is a word with a broader meaning than imp:

Other hypernyms of imp include child, fry, kid, minor, nestling, nipper, small fry, tiddler, tike, tyke, youngster.

imp (noun)	shaver (noun)
one who is playfully mischievous	a razor powered by an electric motor
(folklore) fairies that are somewhat mischievous	a young person of either sex
	an adult male who shaves