A noun is a word that can name a place.
A proper noun names a specific place: Colorado, Europe, Italy, Washington School
Proper nouns are always capitalized.
A common noun names a place that is not specific: state, continent, country, school
Common nouns are not capitalized.
A noun is a word that names a place. The proper noun names a specific place. The common noun names a non-specific place. Always capitalize proper nouns.
It’s your turn. Find a common noun and a proper noun in this sentence. My favorite state is Vermont. Did you figure it out? Good for you!