"South Indians" is a common noun referring to people from the southern region of India.
No, the noun Indians, the plural form of Indian, is a proper noun, the name of people of or from India. Even the mis-identified Native Americans referred to as Indians, is a proper noun, a word for a specific nationality of people.
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