Arbiter (noun) قاضی، ثالث، فیصلہ کرنے والا

a person who settles a dispute or has ultimate authority in a matter.
Example: “the Secretary of State is the final arbiter”
Epithet (noun) خطاب، لقب، خصوصیت

an adjective or phrase expressing a quality or attribute regarded as characteristic of the person or thing mentioned.
Example: “old men are often unfairly awarded the epithet ‘dirty’”