Proper
The compound noun 'bull mastiff' is a common noun, a general word for a breed of dog.
A proper noun is the name of a specific person, place, or thing. A proper noun for the common noun 'bull mastiff' is the name of a bull mastiff, for example Baron Dye Of Ridgetop, Westminster Kennel Club 2014 best of breed.
Sitting Bull is a proper noun, it is the name of a person. A person's name is always a proper noun and is always capitalized.
proper
No, the compound noun pit bull is a common noun, a general word for a breed of dog, of which there are several types.
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
Sitting Bull is a proper noun, it is the name of a person. A person's name is always a proper noun and is always capitalized.
Sitting Bull is a proper noun, it is the name of a person. A person's name is always a proper noun and 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