Hayes vs Helen Hayes

Hayes and Helen Hayes both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hayes	Yes	No	No	No
Helen Hayes	Yes	No	No	No

As nouns, Hayes and Helen Hayes are synonyms defined as:

Hayes and Helen Hayes: acclaimed actress of stage and screen (1900-1993)

Hayes (noun)	Helen Hayes (noun)
19th President of the United States; his administration removed federal troops from the South and so ended the Reconstruction Period (1822-1893)	acclaimed actress of stage and screen (1900-1993)
acclaimed actress of stage and screen (1900-1993)