Three classes of methodologies can be distinguished:

The working class is largely distinguished by highly routinized and closely supervised work.

This class of ships could be distinguished by the lack of fire control radar on the roof of the bridge.

Therefore three classes of Ca signals can be distinguished on the basis of their encoding mode:

In addition to racial and wealth factors, Colombia's classes are distinguished by education, family background, lifestyle, occupation, power, and geographic residence.

Several classes of molecular solids can be distinguished (see table right).

This social class was distinguished by their right to ride in chariots and command battles from mobile chariots, while they also served civil functions.

The following general classes may be distinguished.

The social class of an individual was easily distinguished by the kind of attire one wore.

For the Classic Period of the Mayas, the following major classes of stone sculpture may be distinguished.