Vocabulary subset defining how work is done. Examples: entity engineering, cognitive equilibrium, verification gates. Highest-leverage vocabulary type — terms travel as others adopt methodology. Build through: DefinedTermSet publication, termCode usage in methodology docs, corroboration in methodology discussions (conference talks, training materials, expert interviews). Network effects: wider adoption → stronger term recognition → vocabulary sovereignty strengthens. Requires domain sovereignty first (methodology legitimacy). Measure through term attribution testing (“What is [your methodology term]?”). Enables category ownership beyond competitive domain.