appeal vs challenge

appeal and challenge both are nouns.

Word	Noun	Adjective	Verb	Adverb
appeal	Yes	No	Yes	No
challenge	Yes	No	Yes	No

As verbs, challenge is a hypernym of appeal; that is, challenge is a word with a broader meaning than appeal:

As verbs, challenge is a hypernym of appeal; that is, challenge is a word with a broader meaning than appeal:

Other hypernyms of appeal include take exception.

appeal (noun)	challenge (noun)
(law) a legal proceeding in which the appellant resorts to a higher court for the purpose of obtaining a review of a lower court decision and a reversal of the lower court's judgment or the granting of a new trial	a call to engage in a contest or fight
attractiveness that interests or pleases or stimulates	questioning a statement and demanding an explanation
earnest or urgent request	a formal objection to the selection of a particular person as a juror
request for a sum of money	a demand by a sentry for a password or identification
	a demanding or stimulating situation

appeal (verb)	challenge (verb)
request earnestly (something from somebody); ask for aid or protection	issue a challenge to
cite as an authority; resort to	take exception to
be attractive to	raise a formal objection in a court of law
take a court case to a higher court for review	ask for identification
challenge (a decision)