A linguistic phenomenon that creates or opens a domain in which something can be observed. A uniqueness in language which allows for something to exist, but which itself does not exist in the same domain as everyday reality. A distinction is not like something else: it is not a cleaving of something that is already there. It is an abstraction which may allow for a dichotomy, but it is not a dichotomy. Declarative in nature, the distinctions we have available constitute the structure of interpretation we have of the world (our worldview).