Here's why:
* Noun: A meeting is a gathering of people for a specific purpose.
* Example: "We had a productive meeting about the project."
* Verb: "Meeting" can also be a verb, meaning to come together.
* Example: "The team is meeting to discuss the new plan."
Adjectives describe nouns. For example, "productive" in the first example above is an adjective because it describes the noun "meeting".
Let me know if you have any other words you'd like to know the part of speech for!