Monarchy is defined as "a country that is ruled by a monarch (such as a king or queen)" or "a form of government in which a country is ruled by a monarch" (Merriam-Webster). Some countries have monarchies is part of the larger system of government. For example, The United Kingdom has a monarchy and an elected parliament.
Countries with monarchies include: United Kingdom, Tonga, Bhutan, Japan, Solomon Islands, United Arab Emirates, and Jamaica.
Buchholz, K. (March 10, 2021). The World's Monarchies [Digital image]. Retrieved October 07, 2021, from https://www.statista.com/chart/24383/monarchies/