Classify (verb)

1. Arrange (something) in a particular class or category.
2. Consider (someone or something) as belonging to a particular class or category.

Origin:

Early 17th century: from french classifier or latin classificare, from classis "class".

Examples:

1. The animals are classified according to their characteristics.
2. The new law classifies this drug as a controlled substance.
3. The scientist classified the newly discovered species as a subspecies of the known species.
4. The library classifies the books according to the Dewey decimal system.
5. The company classifies its employees according to their job titles.