crackerjack vs nonesuch

crackerjack and nonesuch both are nouns.

Word	Noun	Adjective	Verb	Adverb
crackerjack	Yes	No	No	No
nonesuch	Yes	No	No	No

As nouns, nonesuch is a hypernym of crackerjack; that is, nonesuch is a word with a broader meaning than crackerjack:

Other hypernyms of crackerjack include apotheosis, ideal, nonpareil, nonsuch, paragon, saint.

crackerjack (noun)	nonesuch (noun)
something excellent of its kind	model of excellence or perfection of a kind; one having no equal
someone excellent of their kind