Organic chemistry and inorganic chemistry are two branches of chemistry, but they differ in their focus. Organic chemistry studies carbon-based compounds, including their structure, reactions, and properties, particularly involving carbon-hydrogen bonds. This branch deals with substances such as oils, proteins, and plastics. In contrast, inorganic chemistry deals with all other elements and compounds that do not primarily involve carbon-hydrogen bonds, such as metals, minerals, salts, and gases like oxygen. A Venn diagram would show a large section of organic chemistry dedicated to carbon compounds, with inorganic chemistry covering a broader range of elements, and both branches overlapping in areas like organometallic chemistry.