1. Volunteer service refers to activities that individuals voluntarily participate in, providing free social services, helping others or supporting a specific cause. University refers to higher education provided by a learning institution, which gives students systematic academic knowledge and professional skills.

2. The purpose of voluntary service is to give back to society, help others and improve the well-being of communities and individuals, while the purpose of universities is to cultivate students' intelligence, skills, critical thinking and personal development, and to serve their future career or professional fields.