Up is one of the most commonly used words in English with multiple meanings:
1. Direction: Towards a higher position (opposite of down)
2. State: Awake or out of bed ("I'm up now")
3. Increase: Prices go up
4. Completion: Time's up
5. Internet slang: "What's up?" (meaning "What's happening?")
6. Phrasal verbs: "give up", "put up with", etc.
7. Sports: The team is up by 5 points