1. Noun:
* Definition: A state of mind or feeling.
* Example: "Her mood was gloomy after the news."
2. Verb:
* Definition: To be in a particular state of mind.
* Example: "He mooded over the lost opportunity." (This usage is less common and often considered archaic.)
3. Adjective:
* Definition: Expressing a particular state of mind.
* Example: "The mood music was very relaxing." (This is a rare usage and usually refers to something that evokes a particular mood.)
4. Interjection:
* Definition: Used to express a feeling or emotion.
* Example: "Mood! Let's go have some fun." (This is a slang usage meaning something like "I agree" or "Let's do it.")
Important note: While "mood" can sometimes function as an adjective or interjection, it is most commonly used as a noun.