Peter the Great, also known as Peter I of Russia, was a Russian CZAR from 1682 to 1725. He is often referred to by the EPITHET 'the Great' and was the first ruler of the House of Romanov to become TSAR of Russia. His reign is known for its sweeping reforms and modernization of the Russian Empire. CZAR, his title of nobility, is a four-letter word. His EPITHET, 'the Great, ' is a seven-letter word. The House of Romanov, the royal family he belonged to, is also a seven-letter word. Finally, TSAR, the title of the monarch of Russia, is a four-letter word.