tiddler vs small fry

tiddler and small fry both are nouns.

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

As nouns, tiddler and small fry are synonyms defined as:

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

tiddler (noun)	small fry (noun)
a young person of either sex	someone who is small and insignificant
	a young person of either sex