Holy Eucharist vs Eucharistic liturgy

Holy Eucharist and Eucharistic liturgy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Holy Eucharist	Yes	No	No	No
Eucharistic liturgy	Yes	No	No	No

As nouns, Holy Eucharist and Eucharistic liturgy are synonyms defined as:

Holy Eucharist and Eucharistic liturgy: a Christian sacrament commemorating the Last Supper by consecrating bread and wine

Other synonyms of Holy Eucharist include Eucharist, Holy Sacrament, Liturgy, Lord's Supper, sacrament of the Eucharist.

Holy Eucharist (noun)	Eucharistic liturgy (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