BBM :- Bachelor of Business Management 

BBA :- Bachelor of Business Administration 

BBM and BBA both are undergraduate courses with duration of three years. 

• BBA :- BBA offers knowledge about management,  leadership skills and a view as to how to enter real corporate world. Students get an opportunity to visit industries also to interact with experts from the industry. Business Organisation, Business Communication, Business Mathematics, Marketing Management are some of the topics included in BBA. 
• BBM :- Accounting, Business Law and Ethics, Economic Finance are some of the topics included in this field. This course offers to students to excel with management techniques. 

Both of these courses are more or less similar but not same. 

If you still have any queries feel free to ask in the comment section down below. 

All the best.