holy terror vs little terror

holy terror and little terror both are nouns.

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

As nouns, holy terror and little terror are synonyms defined as:

Other synonyms of holy terror include brat, terror.

holy terror (noun)	little terror (noun)
a very troublesome child	a very troublesome child