The Ad Hoc Editor allows you to create 3 different types of reports; a table, chart or crosstab. Each type displays the data in a different way. These report types can be edited simultaneously by clicking on the corresponding tab. As one report type is edited, it will affect the way the other report types are displayed.  (Source https://community.jaspersoft.com/).

Tables

A table is the simplest form of a report. It displays data using rows and columns. A table can display all the data in the report or summarize the data across one set of related fields.

Charts

Charts are a graphical representation of the report. There are several chart options that allow you to display the information in a more effective manner.

Crosstabs

Crosstabs summarize data across multiple sets of related fields.The rows and columns represent properties while the cells contain the data that connects these properties. Both rows and columns may be grouped in order to break the data down even further.