* Adjective: This is the most common usage. It describes something related to rhetoric, the art of effective communication.
* Example: "She gave a rhetorical question."
* Noun: This usage refers to the act or skill of using rhetoric.
* Example: "The course focused on the rhetoric of political speeches."
* Adverb: This usage modifies a verb, adjective, or another adverb, indicating that something is done or exists in a way related to rhetoric.
* Example: "He rhetorically asked the question."
So, "rhetorical" isn't a single part of speech, but rather a word with multiple grammatical roles.