Venn Diagram represents how groups or sets of data relate to each other. It uses circles to represent the groups. Intersecting circles represent some common features among the groups. Sometimes all the groups are enclosed in a rectangle (the universal group).
An application-oriented question on the topic along with responses can be seen below. The best answer was provided by Sourabh Nandi on 31st Jul 2020
Applause for all the respondents - Ram Kumar Chaudhary, Sourabh Nandi