world

component, element

石油: oil; petroleum; kerosene

important, significant

importance, consequence, significance

economics; the study of economics / economy

world / a metaphorical world (how one lives one's life) / society, the times / a realm, a circle, a sphere / (Buddhism) the four inner realms of 須弥山 (Shumisen) / (Buddhism) realm governed by a buddha

importance

関: Seki (a city in Gifu Prefecture, Japan); a surname

隻: boats / 石: (slang) transistors