"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
Common
It is a proper noun, because it is the name of a specific thing.
proper
Proper noun
Examples of common nouns for the proper noun Liberty Bell are:artifactbellemblemimagerelicsymbol
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
The noun 'Taco Bell' is a proper noun, the name of a company and a registered trademark of Taco Bell Corporation. A proper noun is always capitalized.
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
The noun cassette is a common noun.
a common noun?