What is a improper noun?

An improper noun is an alternate term for a common noun, a general Word for people, places, and things. The first letter of the noun is not capitalized unless it is the first Word in a sentence or a part of a name or title.

A proper noun is the name of a specific person, place, or thing. A proper noun is always capitalized.

Examples:

Proper noun = John; improper noun = boy, man, friend, brother, neighbor, etc.

Proper noun = Chicago; improper noun = city, metropolis, place, urban center, etc.

Proper noun = Newsweek; improper noun = magazine, publication, etc.

Proper noun = The Sphinx; improper noun = monument, architecture, landmark, etc.

Title: Little House on the Prairie (house and prairie are improper nouns capitalized because they are part of the title.)