From Longman Dictionary of Contemporary EnglishVenn diagramVenn di‧a‧gram /ˈven ˌdaɪəɡræm/ noun [countable] HMa picture showing the relationship between several things by using circles that partly cover each otherExamples from the Corpus

Venn diagram• If you think instead of a Venn diagram metric, then you will understand that not all metrics permit averages.• We are the famous human Venn diagram, where two family circles coincide in bridegroom and bride.• To depict the synergism of those ingredients I use the Venn diagram below.