You are a senior internal auditor who works at Beeman Sports, a local sporting goods store. Kelly is a first-year associate on your team and you have been assigned to mentor her during this year. During your monthly peer meeting with Kelly, she mentions she was recently asked to create a flowchart of a business process for an audit engagement, but the audit manager sent back review notes on her diagram mentioning that it's more of a "data flow diagram" than a flowchart. She's confused about what the difference is between those two documentation methods. 

How would you explain a data flow diagram and a flowchart to Kelly, and what would you tell her regarding the similarities and other items she should be aware of the next time she's creating documentation?