Explain why the $-OH$ group in phenols is more strongly held as compared to the $-OH$ group in alcohols?

(N/A) In phenol, the oxygen atom of the $-OH$ group is directly attached to the $sp^{2}$ hybridized carbon atom of the benzene ring.
Due to resonance, the $C-O$ bond acquires a partial double bond character.
This makes the $C-O$ bond in phenol shorter $(136 \ pm)$ and stronger compared to the $C-O$ bond in alcohols $(142 \ pm)$, where the carbon is $sp^{3}$ hybridized and the bond is a pure single bond.