holy terror vs scalawag

holy terror and scalawag both are nouns.

Word	Noun	Adjective	Verb	Adverb
holy terror	Yes	No	No	No
scalawag	Yes	No	No	No

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

Other hypernyms of holy terror include imp, monkey, rapscallion, rascal, scallywag, scamp.

holy terror (noun)	scalawag (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)