Dame Joan Sutherland vs Joan Sutherland

Dame Joan Sutherland and Joan Sutherland both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dame Joan Sutherland	Yes	No	No	No
Joan Sutherland	Yes	No	No	No

As nouns, Dame Joan Sutherland and Joan Sutherland are synonyms defined as:

Dame Joan Sutherland and Joan Sutherland: Australian operatic soprano (born in 1926)

Other synonyms of Dame Joan Sutherland include Sutherland.

Dame Joan Sutherland (noun)	Joan Sutherland (noun)
Australian operatic soprano (born in 1926)	Australian operatic soprano (born in 1926)