To establish a common understanding the WP3 Evaluation team has established, maintained and updated two glossary types in the course of the X-eHealth project: Project internal glossary with a more comprehensive collection of concepts and acronyms which was provided over the SharePoint platform; Public glossary with key concepts and acronyms ensuring a public understanding of X-eHealth’s results/work which was available from the project’s website. In addition, the X-eHealth WP3 team established a glossaries catalogue, which listed relevant glossaries and recommended consulting them for supplementary reading to promote existing glossaries and harmonize work.