The analysis presented herein reveals several points about the local structure of hydrogen bonded liquids as seen from a dynamical point of view. First of all, hydrogen bond order appears as a particular case of the more general charge order. It is the immediate proximity of the positive charge on the hydrogen atom and the negative charge on the oxygen atom that drive the local structure of these liquids. This is perhaps the most apparent in the striking similarities of the instantaneous cluster structures in water and in alcohols, as illustrated in Fig. . It explains the pronounced similarities in the static OO correlations as well as the dierences in the OH correlations, as seen in Fig. and Fig. .