A Government de jure is a government that is establih according to the constitution of a given state but which actually is cut off from power or control. It is the true, legitimate and lawful goverment.
While de facto government is one that existence of which is maintained by force within the territories and against the rightful authority of an estaablished and lawful government. It is usually administered directly by the military authority, or by civilian authority supported more or less directly by military force. It is necessarily obeyed on civil matters by private citizens who, by acts of obedience rendered in submission to such force, do not become responsible as wrongdoer, fopr those acts, are not warranted by the laws of the rightful government.