Subject: The noun performing the action (usually before the verb).
* Example: The dog barked loudly.
Object: The noun receiving the action of the verb.
* Example: The boy threw the ball.
Object of a preposition: The noun following a preposition (like "to," "from," "with," "on," etc.)
* Example: The cat sat on the mat.
Appositive: A noun that renames another noun, usually placed right after it.
* Example: My brother, John, is a doctor.
Direct Address: A noun used to address someone directly, often set off by commas.
* Example: Mom, can I have a cookie?
It can also be part of a noun phrase: A group of words that act like a noun.
* Example: The big, red ball bounced down the stairs.
Let me know if you'd like more examples or want to explore specific noun types!