All classifying synonyms

noun classifying

• dog tag — a small disk or strip attached to a dog's harness or collar stating owner, home, etc.
• cataloging — Make a systematic list of (items of the same type).
• identification — an act or instance of identifying; the state of being identified.
• apperception — the attainment of full awareness of a sensation or idea
• letter of introduction — a letter given by one person to another, as an introduction to a third party