The noun 'Jack' (capital J) is a proper noun as the name of a specific person (often a nickname for the name 'John' or 'Jackson').
The noun 'jack' (lower case j) is a common noun, a general word for a device used to lift heavy objects; a general word for a playing card ranked just below a queen; a general word for a type of game-piece; a general word for a male of certain species of animals; a word for any jack of any kind.
As a name of a road , Park Avenue', it is a proper noun, and both words star with a capital letter. However, when used separately, as 'the park, or 'the avenue', they are common nouns and so not need a capital letter.
It is a proper noun, because it is the name of a specific thing.
Proper noun
proper
it's a common noun. a proper noun would be Spider-Man.
Pencil proper or common noun
The noun cassette is a common noun.
a common noun?
Camel is a common noun.
The answer is proper noun. Examples of common noun and proper noun are: Proper noun: Mary Collins Common noun: monkey
A common noun.
It's a common noun as it's a general name for a thing. There's nothing special or particular about it.