The noun 'bear' is a common noun, a general word for a type of mammal.
A proper noun is the name of a specific person, place, or thing; for example:
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The compound noun 'polar bear' is a common noun, a general word for a type of bear. A common noun is capitalized only when it is the first word in a sentence.
A proper noun is the name of a specific person, place, or thing, such as Polar Bear International (conservation organization) or Polar Bear Drive, Westford, MA.
Penguin is a common noun. Proper nouns are the unique names of people, places, or things. Common nouns are words for general things. Pronouns replace proper and common nouns.
Yes, bear is a common noun, a word for any bear. A noun becomes a proper noun when it is used for the name of a specific person, place, thing, or a title; for example Bear Valley CA, Build-A-Bear Workshop, and even Yogi Bear.
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.
Yes, "Chicago Bears" is a proper noun. Proper nouns are specific names given to particular people, places, or things, and they are always capitalized. In this case, "Chicago Bears" refers to a specific professional American football team based in Chicago, Illinois, so it is a proper noun.
It is a proper noun, because it is the name of a specific thing.
proper