 Note also that uses of the term “institution” in such expressions as “the institution of government”, are often ambiguous. Sometimes what is meant is a particular token, e.g. the current government in Australia, sometimes a type, i.e. the set of properties instantiated in any actual government, and sometimes a set of tokens, i.e. all governments. Restricting the notion of an institution to organisations is helpful in this regard; the term “organisation” almost always refers to a particular token. On the other hand, the term “institution” connotes a certain gravity not connoted by the term “organisation”; so arguably those institutions that are organisations are organisations that have a central and important role to play in or for a society. Being central and important to a society, such roles are usually long lasting ones; hence institutions are typically trans-generational.