A common noun is a non-specific person, place, or thing. A proper noun is a specific person, place, or organization and is often denoted by a capital letter at the beginning.
Common nouns will be italicized and proper nouns will be bolded.
2.1 Golf is a game that people say was invented in Scotland.
2.2 When a soccer ball is kicked into a goal post, a goal is scored.
2.3 The Little League World Series is held in Pennsylvania.
2.4 If Megan dances well, she will be chosen for the trip to New York City.
2.5 Michael Phelps won eight gold medals at the Olympic Games in China.
Hope this helps! :)