Guinness vs Alec Guinness

Guinness and Alec Guinness both are nouns.

Word	Noun	Adjective	Verb	Adverb
Guinness	Yes	No	No	No
Alec Guinness	Yes	No	No	No

As nouns, Guinness and Alec Guinness are synonyms defined as:

Guinness and Alec Guinness: English stage and screen actor noted for versatility (1914-2000)

Other synonyms of Guinness include Sir Alec Guinness.

Guinness (noun)	Alec Guinness (noun)
a kind of bitter stout	English stage and screen actor noted for versatility (1914-2000)
English stage and screen actor noted for versatility (1914-2000)