Definition:-

• A set or category of things having some property or attribute in common and differentiated from others by kind, type, or quality. (noun)
• A system of ordering society whereby people are divided into sets based on perceived social or economic status. (noun)
• A group of students or pupils who are taught together. (noun)
• Assign or regard as belonging to a particular category. (verb)
• Showing stylish excellence. (adjective)