* Proper nouns are specific names for people, places, or things. For example, "John," "New York City," or "The Eiffel Tower."
* "Alien" is a common noun, meaning it refers to a general category of beings. It describes any being from another planet.
However, you can use "Alien" as a proper noun in a few specific cases:
* If it's a name: Imagine a fictional character named "Alien." This could be the name of an alien or even a human.
* If it's part of a title: You could have a movie called "Alien" or a book titled "The Alien Chronicles."
* If it's a specific species of alien: "The Xylorians are a species of alien known for their telepathic abilities." In this case, "Xylorians" is the proper noun, while "alien" acts as a descriptor.
Remember: Unless you're using "Alien" in one of these specific ways, it's a common noun and should be lowercase.