* Adjective: Describing a distance or degree. *Example:* "The store is far away."
* Adverb: Modifying a verb, adjective, or another adverb. *Example:* "The dog ran far into the woods."
* Interjection: Expressing surprise or dismay. *Example:* "Far out! That's amazing!"
It's important to consider the context of the sentence to determine the part of speech of "far."