https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3481412
…there are 4 types of corruption – Petty Theft (eg. policeman takes a bribe), Grand Theft (eg. a Governor embezzles from the state pension fund), Speed Money (eg. business pay bribes to speed up processing of a permit), and Access Money (eg. pay bribes to get access to the bureaucracy)..