* Noun: A visual representation of something, often created with paint, pencil, or a camera.
* Example: "I took a beautiful picture of the sunset."
* Verb: To form a mental image or idea of something.
* Example: "I can picture her smiling at me."
* Adjective: Relating to a picture or pictures.
* Example: "We went to a picture gallery."
So, it's best to look at the sentence to determine which part of speech is being used.