This is a list of essential terms of the mobility. Your contributions help keep the list fresh and up to date: you can propose new words or redefine those already on the list by refining or supplementing their current definitions. Each lexicon entry comes with both a brief definition and a more detailed explanation, accompanied by a bibliography. Some definitions include suggestions for further discussion or research opportunities. Wherever a lexicon entry appears on the site, its brief definition is available as well, and if so required, you can follow a link to see the complete definition.