Hey as per my idea HR is the branch of MBA it is one of the specialisation

MBA

MBA or Master of Business Administration is one of the popular, 2 year professional courses which is the ever demanding one in India and across the globe. It is a semester based course (mostly 4 semesters)

HR

HR is the human resource which is the specialisation of MBA

MBA specialisation

MBA in Marketing
MBA in Human Resource
MBA in Finance
MBA in Information technology
MBA in Telecom
MBA in International Business
MBA in Agri Business
MBA in Operations
MBA in Retail
MBA in Entrepreneurship
MBA in Hospitality
MBA in Hospital Management
MBA in Pharma Management
MBA in Petroleum and oil management
MBA in Export Import
MBA in Banking
MBA in MBA in Insurance
.MBA in Rural Management
MBA in Co operative Management
MBA in Sports Management