* Noun: When referring to the time to come, the period after the present.
* Example: "The future holds many possibilities."
* Adjective: When describing something that will happen or exist in the future.
* Example: "She has future plans to travel the world."
* Adverb: When modifying a verb or adjective, indicating that something will happen or exist in the future.
* Example: "I will see you future." (This usage is less common, but still valid.)
The specific part of speech depends on the context of the sentence.