Ruling class and Ruling classes

Ruling class noun - The class of people exerting power or authority.

Ruling classes and ruling class are semantically related In some cases you can replace phrase "Ruling classes" with "Ruling class", this phrases are similar.

Ruling class and ruling classes are semantically related in nobility topic. Sometimes you can use "Ruling class" instead a noun phrase "Ruling classes", if it concerns topics such as sophistication, aristocracy, management hierarchy, class below nobility.