A common noun just names off regular items that we use in our daily life. In whatever you say during the day, you are most likely to say a bunch of common nouns.
Some examples of common nouns are book, car, employee, table, glasses...just simple and common words used.
Because happiness cant be bought its something that grows from ur good accomplishments. There are some poor people who have no money to buy their full needs but are still happy due seeing their family memebers
