The noun mystery is a common noun, a word for any mystery of any kind.
A proper noun is the name of a person, place, thing, or a title; for example:
"Mysteries" is not a proper noun; it is a common noun that refers to things that are difficult to understand or explain. Proper nouns are specific names of people, places, or organizations, and they are typically capitalized. For example, "Sherlock Holmes" is a proper noun representing a specific mystery character, while "mysteries" in general is not.
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.