Rock oils, also known as petroleum or crude oil, are natural resources that play a significant role in the global economy. There are several synonyms that can be used for this valuable commodity, such as fossil fuel, hydrocarbon, black gold, or liquid gold. Other commonly used terms include oil reserves, oil deposits, or oil fields. These terms refer to the locations where crude oil is found in the earth's crust, either underground or beneath the ocean floor. The use of rock oils in various industries, including transportation, manufacturing, and energy production, has made it an essential resource in modern society. Despite its importance, efforts to shift toward renewable energy sources highlight the need to reduce our reliance on rock oils.