U7 L5 - Government Vocabulary Definition Picture + Sentence The Head of government and Head of State that leads an executive branch of the presidential democracy of Turkey. The executive branch is separate from the legislative branch. ry A system of government where power lies with the legislative body and the leader of the country is part of the legislature; prime minister is chosen by the legislature DRIN A system of government in which a head of Bovernment (president) leads an executive branch that is separate from the legislative branch. This head of government is in most cases also the head of state.​