humdinger vs nonpareil

humdinger and nonpareil both are nouns.

Word	Noun	Adjective	Verb	Adverb
humdinger	Yes	No	No	No
nonpareil	Yes	Yes	No	No

As nouns, nonpareil is a hypernym of humdinger; that is, nonpareil is a word with a broader meaning than humdinger:

Other hypernyms of humdinger include apotheosis, ideal, nonesuch, nonsuch, paragon, saint.

humdinger (noun)	nonpareil (noun)
someone of remarkable excellence	colored beads of sugar used as a topping on e.g. candies and cookies
	a flat disk of chocolate covered with beads of colored sugar
	model of excellence or perfection of a kind; one having no equal

humdinger (adjective)	nonpareil (adjective)
	eminent beyond or above comparison