Mary vs Madonna

Mary and Madonna both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mary	Yes	No	No	No
Madonna	Yes	No	No	No

As nouns, Mary and Madonna are synonyms defined as:

Mary and Madonna: the mother of Jesus; Christians refer to her as the Virgin Mary; she is especially honored by Roman Catholics

Other synonyms of Mary include Blessed Virgin, The Virgin, Virgin Mary.

Mary (noun)	Madonna (noun)
the mother of Jesus; Christians refer to her as the Virgin Mary; she is especially honored by Roman Catholics	the mother of Jesus; Christians refer to her as the Virgin Mary; she is especially honored by Roman Catholics
	United States pop singer and sex symbol during the 1980s (born in 1958)