What is the difference between HR and administration?

Business administration is a term used to cover all of the business functions of a business. Business administration is the process of organizing the business's personnel and resources to meet business goals and objectives. These processes include human resources, as well as operations management, financial management and marketing management. Human resources is a very important part of business administration because it is responsible for personnel administration.

Human resources is the business administration function responsible for finding, hiring, managing and retaining employees, and for ensuring that the right employees, in the right numbers, are deployed throughout the organization to achieve its goals. Human resources is a function that exists in every business regardless of size, industry or geographic location. In fact, even though small businesses may not have a formal human resource department or an employee with a title that includes "human resources," the function is performed when employees are hired, training, supervised and, hopefully, retained.

HR is limited to only planning,  recruitment, training and compensation of manpower of an organization whiles administration concerns the general day to day running of an organization which also includes  HR function