Mrs. Simpson vs Simpson

Mrs. Simpson and Simpson both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mrs. Simpson	Yes	No	No	No
Simpson	Yes	No	No	No

As nouns, Mrs. Simpson and Simpson are synonyms defined as:

Mrs. Simpson and Simpson: United States divorcee whose marriage to Edward VIII created a constitutional crisis leading to his abdication

Mrs. Simpson (noun)	Simpson (noun)
United States divorcee whose marriage to Edward VIII created a constitutional crisis leading to his abdication	Scottish obstetrician and surgeon who pioneered in the use of ether and discovered the anesthetic effects of chloroform (1811-1870)
	United States divorcee whose marriage to Edward VIII created a constitutional crisis leading to his abdication