* Past participle: This is the most common use. It's used as part of a verb phrase to express a completed action, for example: "The wind swept the leaves away."
* Adjective: It can describe something that is characterized by a sweeping motion, for example: "She had a swept back hairstyle."
* Verb: While not as common, "swept" can also be used as a verb in its simple past tense form, for example: "The woman swept the floor clean."
To determine the part of speech, you need to look at its function within the sentence.