covalent bonds are formed between non-metal atoms only
covalent bonds includes shared pairs of electrons between atoms in a molecule
covalent molecules can be diatomic(covalent bonds of 2 atoms e.g.Br2, O2), triatomic(covalent bonds of 3 atoms e.g.H2O, CO2), teraatomic(covalent bonds of 4 atoms.s e.g.CH4) or polyatomic(covalent bonds of many atoms e.g.H2O)
covalent molecules have strong covalent bonds between atoms but weak intermolecular forces of attraction between the different molecules