Words:
* Name: The most obvious and common way to identify someone.
* Nickname: A familiar and informal name given to someone.
* Title: A formal designation of someone's position or role.
* Description: Physical characteristics like hair color, eye color, height, etc.
* Occupation: What someone does for a living.
* Location: Where someone lives or works.
* Personality trait: A defining characteristic of someone's personality.
* Hobby: An activity someone enjoys in their free time.
* Relationship: How someone is related to you.
* Social media handle: Their username on platforms like Twitter or Instagram.
Items:
* ID card: A document with photo, name, and other identifying information.
* Passport: A document used for international travel, containing identifying information.
* Driver's license: A document allowing someone to drive a vehicle, with identifying information.
* Jewelry: A piece of jewelry with a name or initials engraved.
* Tattoos: Permanent markings on the skin that can be unique.
* Clothing: A specific type of clothing or piece of clothing that is associated with someone.
The best word or item to use depends on the specific context. What are you trying to identify someone for?