Here's why:
* Common nouns refer to general, non-specific people, places, or things.
* Proper nouns are specific names for people, places, or things (like "Sudan" the rhino).
Since "rhino" is a general term for any rhinoceros, it's a common noun.
Here's why:
* Common nouns refer to general, non-specific people, places, or things.
* Proper nouns are specific names for people, places, or things (like "Sudan" the rhino).
Since "rhino" is a general term for any rhinoceros, it's a common noun.