In his view nations could be classified in four categories:

Membership management software can be further classified in three categories:

The Company's products can be classified in four different categories :

Today, guards are typically classified in two broad categories.

Each patient is classified in one of 526 categories, known as diagnosis-related groups.

Scholars have classified the risks of globalization on health in two categories:

Drain cleaners can be classified in two categories: chemical, or device.

Data Loss can be classified in three broad categories.

The amount of space a being needs can be classified in two categories:

The titles are classified in 16 categories of precedence.