The word 'endangered is not a noun.
The word 'endangered' is the past participle, past tense of the verb to endanger. The past participle of the verb also functions as an adjective.
The noun form of the verb to endanger is endangerment.
The noun 'endangerment' is a common noun, a general word for any instance of putting someone or something at risk.
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.
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.