1. Noun: This is the most common use. It means a firm decision to do something, or determination.
* Example: She had a strong resolve to finish the marathon.
2. Verb: It can mean to make a firm decision about something, or to settle or solve something.
* Example: We resolved to go to the beach this weekend.
* Example: They resolved their differences through negotiation.
3. Adjective: While less common, "resolved" can also be used as an adjective meaning determined or firm.
* Example: She was a resolved and ambitious young woman.
So, the specific part of speech depends on the context in which it's used.