Here's why:
* "Butterfly" is a common noun: It refers to a general category of insects.
* Proper nouns are specific: They name individual people, places, or things.
Examples of proper nouns:
* Person: Jane Doe
* Place: Paris, France
* Thing: The Eiffel Tower
To name a specific butterfly, you would need to use a proper noun that identifies its species or individual name. For example:
* Species: Monarch butterfly
* Individual: Flutter (if you gave a butterfly a name)
Let me know if you have any other questions!