Venn diagram

A Venn diagram is one of the simplest ways to show the relationships between groups of things with a clear, visual display.

In a Venn diagram, the circles represent groups of things with a shared attribute. Circles in a Venn diagram can overlap partially, overlap completely, or even be separate — letting the viewer see the relationship between the groups at a glance.

Venn diagrams are often used to explain relationships, display organizational systems or to simply illustrate complex systems.