Question

common noun and proper noun

Answer 1

A common noun is a class of objects or a concept opposed to a particular individual

Answer 2

Explanation:

A proper noun is a noun that identifies a single entity and is used to refer to that entity, such as London, Jupiter, Sarah, or Microsoft, as distinguished from a common noun, which is a noun that refers to a class of entities and may be used when referring to instances of a specific class.