little terror vs scallywag

little terror and scallywag both are nouns.

Word	Noun	Adjective	Verb	Adverb
little terror	Yes	No	No	No
scallywag	Yes	No	No	No

As nouns, scallywag is a hypernym of little terror; that is, scallywag is a word with a broader meaning than little terror:

Other hypernyms of little terror include imp, monkey, rapscallion, rascal, scalawag, scamp.

little terror (noun)	scallywag (noun)
a very troublesome child	one who is playfully mischievous
	a deceitful and unreliable scoundrel
	a white Southerner who supported Reconstruction policies after the American Civil War (usually for self-interest)