Many UN-led global assessments are produced each year. With the launch of each of these publications, they are typically supported with a glossary to enhance the exchange of information and facilitate communication with its readers. Glossaries are essential to establish authoritative definitions, eliminate uncertainty, and define new concepts within assessment processes and across publications. Additionally, when publications are translated, glossaries can be critical as they remove the ambiguity of terms used for the translations. Updating and maintaining these glossaries is essential for the major UN-led assessment publications.