noun
Guinness
Refers to the Irish beer brand or the company. Often used in contexts like Guinness beer or Guinness World Records.
パブでギネスを注文した。
I ordered a Guinness at the pub.
noun
Gwyneth
A female given name, sometimes used in Japanese to refer to people like Gwyneth Paltrow. Less common than the beer brand sense.
グウィネス・パルトロウは「ギネス」と表記されることもある。
Gwyneth Paltrow is sometimes written as ギネス.