appeal vs supplication

appeal and supplication both are nouns.

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

As nouns, supplication is a hyponym of appeal; that is, supplication is a word with a more specific, narrower meaning than appeal:

Other hyponyms of appeal include adjuration, demagoguery, demagogy, plea, solicitation, suit, courting, courtship, suit, wooing.

appeal (noun)	supplication (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	the act of communicating with a deity (especially as a petition or in adoration or contrition or thanksgiving)
attractiveness that interests or pleases or stimulates	a prayer asking God's help as part of a religious service
earnest or urgent request	a humble request for help from someone in authority
request for a sum of money

appeal (verb)	supplication (verb)
request earnestly (something from somebody); ask for aid or protection
cite as an authority; resort to
be attractive to
take a court case to a higher court for review
challenge (a decision)