Helen Hayes vs Hayes

Helen Hayes and Hayes both are nouns.

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

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

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

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