scallywag vs small fry

scallywag and small fry both are nouns.

Word	Noun	Adjective	Verb	Adverb
scallywag	Yes	No	No	No
small fry	Yes	No	No	No

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

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

scallywag (noun)	small fry (noun)
one who is playfully mischievous	someone who is small and insignificant
a deceitful and unreliable scoundrel	a young person of either sex
a white Southerner who supported Reconstruction policies after the American Civil War (usually for self-interest)