Use this template to design your two-set Venn diagrams.
"A Venn diagram or set diagram is a diagram that shows all possible logical relations between a finite collection of sets. Venn diagrams were conceived around 1880 by John Venn. They are used to teach elementary set theory, as well as illustrate simple set relationships in probability, logic, statistics, linguistics and computer science." [Venn diagram. Wikipedia]
This template "2-set Venn diagram" for the ConceptDraw PRO diagramming and vector drawing software is included in the Venn Diagrams solution from the area "What is a Diagram" of ConceptDraw Solution Park.