/ˈjuːnjən/ – noun
Definition: 1. liên minh, liên bang;
2. sự hợp nhất những người không có tư cách pháp nhân;
3. công đoàn, nghiệp đoàn;
4. hiệp hội, hội liên hiệp;
5. sự kết hôn.
A more thorough explanation: A “union” is a formal organization of workers that is formed to protect and promote their rights and interests in the workplace, typically through collective bargaining with employers.
Example: The union representing the factory workers negotiated a new collective bargaining agreement with the management.