B.Com and ACCA are accounting and finance management courses. Both courses are covering the basic and professional part of accounting and finance management but there are some differences though.
B.com is a undergraduate program which you can do in 3 years time. B.com covers all fundamentals and advanced accounting management aspects. In other hand, ACCA is an international certification program from UK and ACCA has 14 papers and the first 9 papers covers fundamentals of accounting and last 7 papers covers most advance and professional parts of accounting.