Virgin Mary vs female parent

Virgin Mary and female parent both are nouns.

Word	Noun	Adjective	Verb	Adverb
Virgin Mary	Yes	No	No	No
female parent	Yes	No	No	No

Virgin Mary (noun)	female parent (noun)
a Bloody Mary made without alcohol	a woman who has given birth to a child (also used as a term of address to your mother)
the mother of Jesus; Christians refer to her as the Virgin Mary; she is especially honored by Roman Catholics