Organic chemistry is the study of carbon-containing compounds, primarily those that involve carbon-hydrogen bonds. It includes substances like oils, proteins, plastics, and pharmaceuticals. Inorganic chemistry, on the other hand, focuses on compounds that do not contain carbon-hydrogen bonds, such as metals, minerals, and salts. While organic chemistry is primarily concerned with living systems and complex molecules, inorganic chemistry deals with simpler substances and often explores minerals and elements found in nature.