The subset of vocabulary sovereignty consisting of terms that define how work is done — methodologies, frameworks, processes, diagnostic protocols. Methodological vocabulary is the highest-leverage form of vocabulary sovereignty because it travels: other organizations adopt your terms to describe their own work, creating network effects in term recognition. Entity engineering, cognitive equilibrium, and schema entropy are methodological vocabulary: they describe how the work is done, not merely what the work is called. Methodological vocabulary requires DefinedTermSet publication and systematic termCode usage in methodology documentation.