BE defines essence. HAS defines constitution. DO defines behaviour under conditions. WHY defines function (only in systems). BE → Identity, Class, Category, Type HAS → Parts, Properties, Attributes DO → Behaviour (under conditions) WHY → Function (Final Cause, system-level) BE → Identity HAS → Properties / Constituents DO → Behaviour ENTITY: Human BE: Biological species Member of genus Homo HAS: Characteristic biological traits (as a class) DO: — not defined at class leve...