Lime is a calcium-containing inorganic mineral composed primarily of oxides, and hydroxide, usually calcium oxide and/ or calcium hydroxide. It is also the name for calcium oxide which occurs as a product of coal-seam fires and in altered limestone xenoliths in volcanic ejecta. The word lime originates with its earliest use as building mortar and has the sense of sticking or adhering.
Limestone, limestone, or substances that we call limestone are used to obtain lime. Limestone is a type of sedimentary rock consisting of calcium carbonate salt. Another name for limestone is limestone. It is expressed as limestone in rocks that have at least 90% calcium carbonate in their structure in nature. Limestone is used today for making cement. The limestones I mentioned are formed in nature as a chemical solution in marine and fresh waters in the form of travertine in underground waters.