1. the act or process of arranging things into categories or groups based on shared characteristics
Usage: British spelling; American English typically uses 'categorization'; commonly used in academic, scientific, and organizational contexts
2. a system or scheme of categories into which things are divided
Usage: often used in psychology, linguistics, and data management

Examples

• The categorisation of books in the library makes it easier to find what you need.
• Scientists use categorisation to organize different species of animals.
• The categorisation of students by ability level is common in many schools.
• Proper categorisation of data helps businesses make better decisions.
• The museum's categorisation system divides artifacts by historical period.
• Her research focused on the categorisation of different types of clouds.
• The categorisation of expenses into departments helps track spending.