What is the process called when items are grouped based on shared characteristics?

The process of grouping items based on shared characteristics is referred to as classifying. Classification involves organizing items into categories based on common traits or properties, allowing for easier understanding, analysis, and communication about those items. This method is commonly used in various fields, such as science, where organisms are classified into kingdoms, phyla, classes, and so on based on similarities and differences.

While categorizing, grouping, and sorting might involve similar actions, classifying specifically emphasizes the systematic arrangement of items based on defined criteria and characteristics. This makes it distinct since it often includes a structured approach that can facilitate detailed study or comparison among the classified items.