A Dipole refers to a molecule that has a true and constant Dipole moment. Polar molecules, due to electronegativity differences between constituent atoms, will have permanent partial positive and partial negative regions. When these partial charge regions are oriented such that the resulting dipoles don't cancel out, the molecule will have a permanent net Dipole.
An induced Dipole refers to molecules that do not typically meet the conditions above necessary for having a true Dipole, but, when around other molecules, develop temporary dipoles. When ions and/or molecules with a true dipole are near such molecules, their electrostatic influence will induce the distortion of that molecule's electron cloud, making it have a temporary dipole. Between multiple molecules without dipoles, random fluxuations within electron clouds result in the formation of weak and temporary dipoles which have a chain effect on the electron clouds of surrounding molecules.
In terms of strength, intermolecular interactions involving true dipoles and/or ions are typically stronger than their counterpart intermolecular interactions involving induced dipoles and/or ions. This results in substances with true dipole and or ions interactions being more resistant to temperature change and possessing higher boiling and melting points.
However, it is important to note that with London dispersion forces, increasing polarizability and size of molecules, as well as a shape allowing for molecules to have more surface area in close proximity greatly influence the strength of the dispersion forces. This can result in cases where dispersion forces can be stronger than dipole-dipole interactions.
Note however, that these types of intermolecular forces arent mutually exclusive; for example, specimen that exhibit stronger IMFs such as hydrogen bonding also exhibit weaker IMFs such as dipole-dipole interactions and dispersion forces.
Here's a little reference chart for the forces:https://www.chem.fsu.edu/chemlab/chm104 ... mmary3.gif
(^note: energy ranges are in kJ/mol)
Additional resources:https://www.chem.wisc.edu/deptfiles/gen ... f/imf5.htm