Paschal Lamb vs Agnus Dei

Paschal Lamb and Agnus Dei both are nouns.

Word	Noun	Adjective	Verb	Adverb
Paschal Lamb	Yes	No	No	No
Agnus Dei	Yes	No	No	No

As nouns, Paschal Lamb and Agnus Dei are synonyms defined as:

Paschal Lamb (noun)	Agnus Dei (noun)
figure of a lamb; emblematic of Christ	figure of a lamb; emblematic of Christ
	a liturgical prayer beginning with these Latin words