Huawei NBN Interoperability between network-management systems is customarily arranged by agreeing a shared data model in advance or, where that falls short, a richer shared information model or ontology; both still require broad prior agreement on a common model. This document, a companion to and enhancement of draft-janz-nmrg-ontology- reconciliation, argues that for systems built as cognitive, language- capable agents the shared reference can instead be a thin reference lexicon: a consultable nomenclature of named entities with disambiguating definitions and examples, free of relationship axioms and attribute schemas, and typically derived from an existing model. Each agent brings the lexicon apt to it; the two are lexically aligned into cross-source correspondences; identity is settled wherever they correspond; and only the residual is reconciled by the conversation of the companion document. The document develops what such a lexicon should contain, the two-stage alignment that relates lexicons across sources, the distinct problem of co-referencing specific instances, and the scaling that follows from anchoring translation on shared references; and it recommends how model authors can make their artefacts more amenable to this automated alignment.