Human resource management (HRM) : is a department that supports all work related to personnel within the organization to be able to perform their duties appropriately with the positions, duties and goals of the organization, from recruitment, preparation, evaluation and development. To achieve maximum benefit to the organization
Human Resource Development (HRD) : is a sub-unit of HRM that studies, selects methods and uses various tools to develop employees and apply them to work and life. Which will lead to effective personnel within the organization
Organizational Development (OD): creating tools to improve the performance of personnel to be efficient and effective. By focusing on the efficiency of the organization rather than the personnel alone, it also creates a process for working as a team and defining a team structure that is appropriate for the organization.
Source : https://www.entraining.net/article-HRD-Development/