Supramolecular and Macromolecular chemistry are two branches of chemistry which are related to the study of molecules. Supramolecular chemistry is the study of the non-covalent interactions between molecules, while macromolecular chemistry focuses on the covalent bonds between the atoms which make up large molecules. Both disciplines involve the study of the structures and properties of these molecules. Supramolecular chemistry is the branch of chemistry which focuses on the dynamic interactions between molecules, ions, and other structures. It explores the weak physical and/or chemical forces which hold molecules together, or links molecules to other molecules. These structures, which are held together by non-covalent bonds, can form larger structures called complexes. Through this research, scientists strive to understand the structure and function of these complexes, as well as how they interact with one another. Macromolecular chemistry defines the study of large molecules built from many atoms connected by covalent bonds. These macromolecules can be natural or synthetic, and their structures can range from semi-rigid rods to networks of branching chains. Common examples of macromolecules include polymers, peptides, proteins, and carbohydrates. Macromolecular chemistry focuses on the synthesis and characterization of these molecules, and the investigation of their properties at the molecular level. Supramolecular and Macromolecular chemistry are both important branches of chemistry which have contributed significantly to a variety of fields, from biomedical research to materials science. By studying and understanding the fundamentals of these two disciplines, scientists and engineers are continually developing new and innovative materials and systems that help to improve our lives.