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specialized family

venn

Overlapping circles showing set intersections.

Two or three overlapping circles show shared and unique elements. Common in marketing positioning ("we sit at the intersection of X and Y") and audience analyses.

When to use

Showing set membership and overlaps between 2–3 groups.

When NOT to use

4+ sets (becomes unreadable). Or precise counts matter (use UpSet plot).

Rhetorical roles

  • decompose
  • position

Variants & related

Required primitives

  • has_legend OR has_data_labels

Optional primitives

  • has_title

Common anti-patterns

  • decoration-only

Disambiguation rules

  • 2–3 overlapping circles.
  • If labels just sit in named areas without circles, it might be a framework, not a venn.