supplication vs prayer

supplication and prayer both are nouns.

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

As nouns, supplication and prayer are synonyms defined as:

supplication and prayer: the act of communicating with a deity (especially as a petition or in adoration or contrition or thanksgiving)

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

Other hypernyms of supplication include orison, petition.

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

Other hypernyms of supplication include appeal, entreaty.

supplication (noun)	prayer (noun)
the act of communicating with a deity (especially as a petition or in adoration or contrition or thanksgiving)	the act of communicating with a deity (especially as a petition or in adoration or contrition or thanksgiving)
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	a fixed text used in praying
	reverent petition to a deity
	someone who prays to God