Magna Mater vs Great Mother

Magna Mater and Great Mother both are nouns.

Word	Noun	Adjective	Verb	Adverb
Magna Mater	Yes	No	No	No
Great Mother	Yes	No	No	No

As nouns, Magna Mater and Great Mother are synonyms defined as:

Magna Mater and Great Mother: great nature goddess of ancient Phrygia in Asia Minor; counterpart of Greek Rhea and Roman Ops

Other synonyms of Magna Mater include Cybele, Dindymene, Mater Turrita.

Magna Mater (noun)	Great Mother (noun)
great nature goddess of ancient Phrygia in Asia Minor; counterpart of Greek Rhea and Roman Ops	great nature goddess of ancient Phrygia in Asia Minor; counterpart of Greek Rhea and Roman Ops