The company's latest cell phone has no 'rival/rivals'. [=the company's newest cell phone is much better than all others available]
The company's paper is the 'rival' of any in the world. [=it is as good as any paper in the world]
He told a 'rival' version of the story. [=a version that disagrees with another version]
(..) perfectly clear the first time. - You're not welcome. - You once spoke of your respect for our father because he understood the necessity of working with one's rivals. My dear, you have been stripped of your dignity and authority, publically shamed, and confined to the Red Keep. (..)2016 TvShow: Game of Thrones Title: Book of the Stranger Season: 6 Episode 4