prince is a comman noun unless it is a specfic prince then it's proper.
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
The noun 'prince' is a singular, common, concrete noun; a word for a person.The noun 'Prince' (capital P) is a proper noun as the name or title of a specific person.
Common
It is a proper noun, because it is the name of a specific thing.
proper
Proper noun
it's a common noun. a proper noun would be Spider-Man.
Pencil proper or common noun
Proper noun or common noun
Yes, Prince William is a proper noun, the name of a specific person. A proper noun is the name of a specific person, place, or thing.
The noun cassette is a common noun.