Common noun is a type of noun that denotes a general name for a person, place, thing or event and begins with a small letter. On the other hand, proper noun is a name of a particular common noun and begins with a capital letter. A list of examples is provided below to better understand the difference between proper and common nouns.
Examples:
 | Common Noun | Proper Noun | 
| state | California | 
| company | Microsoft | 
| dog | Brownie | 
| beach | Boracay | 
| country | Singapore | 
| boy | John | 
| girl | Ellen | 
| movie | Avatar | 
| university | Harvard University | 
| book | The Alchemist | 
| holiday | Independence Day | 
| month | April | 
| cartoon character | Spiderman | 
| river | Mississippi River | 
| language | English | 
| subject | Science | 
| actress | Julia Roberts | 
| planet | Earth | 
| fast food chain | McDonald’s | 
| mountain | Mt. Everest | 
