Guinness vs Sir Alec Guinness

Guinness and Sir Alec Guinness both are nouns.

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

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

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

Other synonyms of Guinness include Alec Guinness.

Guinness (noun)	Sir 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)