The need for a common language relies to some extent on various nominal examinations in addition to measurements. The "International vocabulary of metrology - Basic and general concepts and associated terms" (VIM) is designed for metrology, the science of measurement. The aim of the proposed vocabulary is to suggest definitions and explanations of concepts and terms related to nominal properties, i.e. properties that can be compared for identity with other properties of the same kind-of-property, but have no magnitude.