humdinger vs paragon

humdinger and paragon both are nouns.

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

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

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

humdinger (noun)	paragon (noun)
someone of remarkable excellence	an ideal instance; a perfect embodiment of a concept
	model of excellence or perfection of a kind; one having no equal