Purity

Roles: pure-substance, contaminant, contamination-threshold, assay, mixture, dilution, refinement, corruption, taint, integrity

The domain of substance purity and contamination: the binary state of being unmixed versus adulterated. Unlike cleanliness (which concerns surfaces, washing, and hygiene processes), purity concerns the essential composition of a substance — whether it is unadulterated, how much contaminant renders it impure, and whether contamination is reversible. Key logic: a single drop of contaminant can render an entire substance impure (asymmetric contamination), purity is an absolute rather than a gradient, and testing for purity requires assay rather than inspection. Source domain for moral, religious, and ethnic purity discourses.

As Source Frame (3)

• Come with Clean Hands → ethics-and-morality
• Morality Is Purity → ethics-and-morality
• Whitewash → social-presentation