What is the main difference between Human Resource Management & Human Resource Development ?

The Human Resources Management (HRM) function includes a variety of activities, and key among them is deciding what staffing needs you have and whether to use independent contractors or hire employees to fill these needs, recruiting and training the best employees, ensuring they are high performers, dealing with performance issues, and ensuring your personnel and management practices conform to various regulations. Activities also include managing your approach to employee benefits and compensation, employee records and personnel policies. Human Resource Development (HRD) serves communities and people's needs by developing resources that provide opportunities and essential services such as health and nutrition, emergency services, affordable housing, Head Start, youth development, volunteer opportunities, transportation, energy assistance and conservation and community development.