What is difference between prompt and macros in Cognos?

Difference between macros and prompt in Cognos is

Macro is a set of commands that can execute an application. Macro is a dynamic object that is implemented to replace the values during the query run time. Macro can open the catalog, select a particular report and convert it to another format at any specific location. A macro is a non-interactive object for the non-user and returns a single value.

Prompt determines the way through which the data should be displayed in the reports. It is defined during the report generation at the catalog level. It is a dynamic condition that selects or enters the value during the run time of the query.