Intermolecular hydrogen bonding – Intermolecular hydrogen bonding is formed between two or more different molecules of the same or different types. The solubility of alcohol in water is also an example of intermolecular hydrogen bonding.
Intramolecular hydrogen bonding – Intramolecular hydrogen bonding exists within the same molecule, then it is called intramolecular hydrogen bonding. An intramolecular hydrogen bond results in the cyclization of the molecule and prevents their association.
Intramolecular forces are stronger because for covalent bonds they involve the actual sharing of electrons because the molecule forming intramolecular hydrogen bonding contains two groups such that one group contains hydrogen atom links to the highly electronegative atom and the other group should contain a highly electronegative atom linked to a less electronegative atom.