Hepburn vs Audrey Hepburn

Hepburn and Audrey Hepburn both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hepburn	Yes	No	No	No
Audrey Hepburn	Yes	No	No	No

As nouns, Hepburn and Audrey Hepburn are synonyms defined as:

Hepburn and Audrey Hepburn: United States film actress who appeared in many films with Spencer Tracy (1907-2003)

Other synonyms of Hepburn include Katharine Hepburn, Katharine Houghton Hepburn.

Hepburn (noun)	Audrey Hepburn (noun)
United States film actress who appeared in many films with Spencer Tracy (1907-2003)	United States film actress who appeared in many films with Spencer Tracy (1907-2003)