Nearly every technical body in standardization must standardize its terminology. At international level alone possibly more than 200 technical committees are standardizing their terminologies. Considering that there are often more than hundred technical committees each in standards bodies at regional (e.g. CEN, the European Committee for Standardization) and national levels, there may well be more than 3000 committees standardizing terminology world-wide.
In addition, thousands of organizations beyond standardization are unifying their terminology on a larger or smaller scale. Some of these organizations are highly authoritative in their domain. Often they form networks of similar organizations at international, regional and national levels.
Furthermore, many international, regional or national authorities harmonize terminologies, either in order to clarify certain matters of legal impact or when existing unified or standardized terminologies contradict each other.
OECD, the Organisation for Economic Co-operation and Development, in its “Data and metadata reporting and presentation handbook” states: “Terminology management is an essential element of an organization’s metadata management system…”. This is of utmost importance in the field of public statistics.