hard is a common English word with multiple meanings:
1. Physically firm or solid (opposite of soft)
2. Difficult to do or understand
3. Requiring a lot of effort
4. Severe or harsh
5. In slang, can mean "cool" or "awesome"
Common phrases:
- hard work: 艰苦的工作
- hard time: 艰难时期
- hard feelings: 怨恨