SPECIFICALLY. “In today’s usage, the term “Compton scattering” is used for the inelastic scattering of photons by free, charged particles.”
https://opentextbc.ca/universityphysicsv3openstax/chapter/the-compton-effect/#:~:text=The%20Compton%20effect%20is%20the,wavelength%20of%20the%20incident%20radiation