Definition 2: the largest continent with 60% of the earth's population; it is joined to Europe on the west to form Eurasia; it is the site of some of the world's earliest civilizations - [noun denoting object]
(asia is an instance of ...) one of the large landmasses of the earth
"there are seven continents""pioneers had to cross the continent on foot"
(asia is a part of ...) a Muslim republic that occupies the heartland of ancient south Asian civilization in the Indus River valley; formerly part of India; achieved independence from the United Kingdom in 1947
(asia is a part of ...) a landlocked republic to the south of Russia and to the northeast of the Caspian Sea; the original Turkic-speaking inhabitants were overrun by Mongols in the 13th century; an Asian soviet from 1936 to 1991
(asia is a part of ...) a Turkish sultanate of southwestern Asia and northeastern Africa and southeastern Europe; created by the Ottoman Turks in the 13th century and lasted until the end of World War I; although initially small it expanded until it superseded the Byzantine Empire
(asia is a part of ...) an empire established by Augustus in 27 BC and divided in AD 395 into the Western Roman Empire and the eastern or Byzantine Empire; at its peak lands in Europe and Africa and Asia were ruled by ancient Rome
(asia is a part of ...) a Muslim republic in southern Asia bordered by India to the north and west and east and the Bay of Bengal to the south; formerly part of India and then part of Pakistan; it achieved independence in 1971