imp vs tiddler

imp and tiddler both are nouns.

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

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

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

imp (noun)	tiddler (noun)
one who is playfully mischievous	a young person of either sex
(folklore) fairies that are somewhat mischievous