* Verb: This is the most common use, describing the action of creating something new.
* Example: "The scientist invented a new type of battery."
* Past Participle: This form can act as an adjective, describing something that has been created.
* Example: "The invented technology was a breakthrough."
* Adjective: While less common, it can describe something that is made-up or unreal.
* Example: "The characters in the story were completely invented."
To determine the correct part of speech, you need to look at how "invented" is used in the sentence.