Covalent bonds are not considered noncovalent interactions. Covalent bonds involve the sharing of electrons between atoms and are formed through the overlap of atomic orbitals. They are strong bonds and are responsible for the formation and stability of the primary structure of macromolecules, such as the backbone of proteins or the sugar-phosphate backbone of DNA. Noncovalent interactions, on the other hand, are weaker and include various types such as hydrogen bonds, van der Waals forces, electrostatic interactions, and hydrophobic interactions. These noncovalent interactions play crucial roles in the folding, stability, and interactions of macromolecules.