How many different parts of speech can the word up be?

The word "up" can function as four different parts of speech:

1. Adverb: This is the most common usage. It modifies verbs, adjectives, or other adverbs, indicating direction, position, completion, or increase.

* Example: "The sun is coming up."

2. Preposition: It shows the relationship between a noun or pronoun and another word in the sentence.

* Example: "I walked up the stairs."

3. Particle: Part of a phrasal verb.

* Example: "He gave up smoking."

4. Interjection: Expresses a sudden feeling or emotion, usually written as "Up!"

* Example: "Up! The game is starting."

Let me know if you want more examples!