"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
No, the noun 'pet' is a common noun, a general word for any pet of any kind.A proper noun is the name of an individual person, place or thing. A proper noun for the common noun pet is the name of a pet, for example, "Fifi" or "Spot", or:Pet Street, Foley, MO or Pet Lane Road, Murphy, NCDave's Soda & Pet City (pet supplies), Springfield, MAPet Air Carrier (pet shipping service), Roswell, GA
Pencil proper or common noun
proper noun
Exxon is a proper noun
Yes, the word 'Ali' is a proper noun, the name of a person.A proper noun is the name or title of a specific person, place, or thing.A proper noun is always capitalized.
proper noun
Proper noun
It is a proper noun, because it is the name of a specific thing.
what is trix
Proper noun or common noun
it's a common noun. a proper noun would be Spider-Man.