Comment vs. Note
The Note feature is similar to the Sticky Notes function in Microsoft where it allows the user to add annotations about the data or add reminders in the cell. It is used for one’s own review as it does not have a Reply box.
How is it Used in Real Estate?
When building financial models, multiple analysts, as well as the clients, usually review the workbook, and add comments and notes that need to be incorporated. It would be time consuming to have meetings every time a change needs to be made, and hence these features are extremely useful when perfecting the model.