The varying electronegativity of atoms in a compound primarily indicates the type of bond present between them.
When two atoms in a compound have significantly different electronegativities, it often leads to the formation of an ionic bond, where one atom donates electrons to another, resulting in the attraction between positively and negatively charged ions. If the difference in electronegativity is less pronounced, a covalent bond may form, where electrons are shared between the atoms, leading to polar covalent or nonpolar covalent bonds depending on the relative electronegativities.
Therefore, the correct response is Type of bond.