Common nouns do not need to begin with a capital letter. A proper noun is a name given to a specific person, place, or thing.
Proper nouns begin with capital letters.
Each sentence below contains two proper nouns. One of the proper nouns begins with a capital letter as it should. The other proper noun is spelled incorrectly, because it does not begin with a capital letter. Correct the proper noun that needs to have its initial letter capitalized by writing it after the sentence. The first three sentences have been done for you.