What is the difference between a common noun and a proper noun?
A common noun is the general name given to a person, place, thing, or idea. A proper noun is the specific name of a particular person, place, thing, or idea. Common Nouns doctor avenue volcano a theory Proper Nouns Dr. William Sharp Third Avenue Mount St. Helens Pythagorean Theorem Common nouns are not capitalized, while proper nouns are.
