* Gerund: When used as the subject of a sentence or as the object of a verb or preposition, "preparing" acts as a noun.
* Example: Preparing for the presentation was a lot of work. (Subject)
* Example: I enjoy preparing meals. (Object of the verb "enjoy")
* Example: She was busy with preparing the ingredients. (Object of the preposition "with")
* Present Participle: When used as part of a verb phrase, "preparing" acts as a verb.
* Example: They are preparing for the big game.
* Example: I was preparing dinner when the phone rang.
So, the part of speech of "preparing" depends on its function in the sentence.