* Adjective: Describing something as being the first or earliest version of something.
* Example: "This is an original painting by Picasso."
* Noun: The first or earliest version of something.
* Example: "The original of the document is kept in the archives."
* Verb: To create or invent something new.
* Example: "She originated the idea for the new product."
So, the part of speech for "original" depends on its specific use in a sentence.