How I see the difference between Inflation and Currency debasement is this:
Inflation more or less happens to all countries naturally. It just varies by rate. If a country is experiencing rapid or high inflation then it means it is no longer healthy but if a country is experiencing inflation at a low rate then it is still ideal. Why does inflation happen naturally? Because of the growing economy of a country.
Meanwhile currency debasement doesn't just happen naturally. It has to be intentional. Done by the government in a form of policy or something. Usually if this is happening, it is bad.