Dipole Moment: It's the measure of the polarity of a molecule. The larger the difference in electronegativities of bonded atoms, the larger the dipole moment.
Electronegativity: It is a measure of how strongly an atom can attract electrons towards itself in a chemical bond.
Hydrogen Bonding: A type of intermolecular force where hydrogen atom from one polar molecule is attracted to an electronegative atom (usually nitrogen, oxygen or fluorine) from another molecule.