* Verb (past participle): This is the most common use, describing an action that was completed in the past.
* Example: "She promised to call me later."
* Adjective: Describing something that has been promised.
* Example: "He received a promised reward for his work."
* Noun: Referring to a promise itself.
* Example: "The promised land was a place of hope."
To determine the specific part of speech, you need to look at how the word is used in the sentence.