I've tried to explain the concepts in my own way. This may slightly vary from the text books. But I can distinguish between these concepts in real life scenario. Main concepts explained are:
00:00
00:06 BIA, Business Impact Analysis
00:30 BIA Report
00:55 Risk
00:57 RA, Risk Assessment
01:12 DRP, Disaster Recovery Plan
01:45 CBA, Cost Benefit Analysis