Lord's Supper vs sacrament of the Eucharist

Lord's Supper and sacrament of the Eucharist both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lord's Supper	Yes	No	No	No
sacrament of the Eucharist	Yes	No	No	No

As nouns, Lord's Supper and sacrament of the Eucharist are synonyms defined as:

Lord's Supper and sacrament of the Eucharist: a Christian sacrament commemorating the Last Supper by consecrating bread and wine

Other synonyms of Lord's Supper include Eucharist, Eucharistic liturgy, Holy Eucharist, Holy Sacrament, Liturgy.

Lord's Supper (noun)	sacrament of the Eucharist (noun)
a Christian sacrament commemorating the Last Supper by consecrating bread and wine	a Christian sacrament commemorating the Last Supper by consecrating bread and wine
the traditional Passover supper of Jesus with his disciples on the eve of his crucifixion