Right now either www.windows-movie-maker.org or windows-movie-maker.org is failing to resolve properly or returns a 404 error. You should set a preferred domain in Google Search Console and use a 301 redirect to divert traffic from your secondary domain.
A network solid or covalent network solid is a chemical compound (or element) in which the atoms are bonded by covalent bonds in a continuous network extending throughout the material.
Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds.he covalent bond is formed when two atoms are able to share electrons whereas the ionic bond is formed when the sharing is so unequal that an electron from atom A is completely lost to atom B, resulting in a pair of ions. Each atom consists of protons, neutrons and electrons.