Well Milwaukee, Wisconsin is a place, so it would be a proper noun.
The likely proper noun, a city in Wisconsin, is Milwaukee.
The proper noun, a US city in Wisconsin, is spelled Milwaukee.
The word sought may be the proper noun Milwaukee, a city in Wisconsin.
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
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.