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 Proper Nounsdoctor Dr. William Sharp avenue Third Avenue volcano Mount St. Helens a theory Pythagorean Theorem
Common nouns are not capitalized, while proper nouns are.