Tip is a common English word with multiple meanings:
1. A small amount of money given to someone for performing a service (e.g. waiters, taxi drivers)
2. A helpful piece of advice or information
3. The pointed or rounded end of something (e.g. finger tip)
4. To tilt or cause to tilt (e.g. tip the scales)
5. To give secret information (e.g. tip off the police)