Valencies, an important concept in chemistry, refer to the capacity of an atom to combine with other atoms. Synonyms for this term include chemical bonds, oxidation numbers, and affinities. Chemical bonds pertain to the forces that hold atoms together in a compound while oxidation numbers express the electron distribution within a molecule. Affinities describe the relative attraction between atoms and molecules. Other related related synonyms include electronegativity, ionization potentials, and coordination numbers. Understanding the various synonyms for valencies is essential in comprehending chemical reactions and molecular interactions.