Venn diagrams or set diagrams are diagrams that show all possible logical relationships and hypotheses between groups (sets / sets / groups) of objects / objects. As part of the mathematical sciences, this Venn diagram was first introduced in 1880 by John Venn to show a simple relationship in topics in logic, probability, statistics, linguistics and computer science.
Logic comes from the ancient Greek word λόγος (logos) which means the result of reasoning thought expressed through words and expressed in language. Logic is one branch of philosophy.
As a science, logic is called the logic episteme (Latin: logica scientia) or the science of logic (science) that learns the ability to think straightly, precisely, and regularly. 
Science here refers to the rational ability to know and the ability to refer to the ability of reason to manifest knowledge into action. Logical words used can be interpreted with reasonable.