scallywag vs imp

scallywag and imp both are nouns.

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

As nouns, scallywag and imp are synonyms defined as:

Other synonyms of scallywag include monkey, rapscallion, rascal, scalawag, scamp.

scallywag (noun)	imp (noun)
one who is playfully mischievous	one who is playfully mischievous
a deceitful and unreliable scoundrel	(folklore) fairies that are somewhat mischievous
a white Southerner who supported Reconstruction policies after the American Civil War (usually for self-interest)