(1) Geothermal Energy : Geothermal energy is the heat energy that is generated and stored within the Earth. The Earth's core has extremely high temperatures, and this heat can be harnessed to produce electricity or for heating purposes. This is done by drilling deep into the Earth to tap into underground steam or hot water. It is a renewable and non-conventional source of energy.
(2) Mineral : A mineral is a naturally occurring, inorganic solid substance with a definite chemical composition and a specific crystal structure. Minerals are the basic building blocks of rocks and are found in the Earth's crust. They are often categorized as either metallic (e.g., iron ore, manganese) or non-metallic (e.g., mica, limestone) minerals.