* Verb (present participle): This is the most common use. It describes an ongoing action.
* Example: "She is staying at her aunt's house."
* Gerund: This is a verb form that acts like a noun.
* Example: "Staying healthy is important."
* Adjective: This is less common, but possible in certain contexts. It describes a characteristic.
* Example: "The staying power of this perfume is amazing."
To determine the correct part of speech, you need to look at how the word is used in the sentence.