supplication vs entreaty

supplication and entreaty both are nouns.

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

As nouns, entreaty is a hypernym of supplication; that is, entreaty is a word with a broader meaning than supplication:

Other hypernyms of supplication include appeal, prayer.

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