HRD & HRM are both related terms were also termed as Personnel Management.
HRM is Human Resource Management, it is the management of Human resource in an organization.taking care of the basic requriments of the employees such as recruiting, staffing maintaining of employee relations and other employee realted issues.
HRD is the Human Resource Development, it is the development of the Resources of the Company (Human)
HRD includes the areas of training and development, career development, and organization development. This is related to Human Resource Management -- a field which includes HR research and information systems, union/labor relations, employee assistance, compensation/benefits, selection and staffing, performance management systems, HR planning, and organization/job design.
HRD is complete only with a proper HRM in the company.
I hope this explanation will be helpfull to you.
23rd June 2007 From Kuwait