Those terms have no agreed upon definitions.
So it's better to discuss details than to argue
over jargon.
I'll try to explain it to you in the simplest way possible.
The Keynesian model states that there is no potential product, since a country's production depends on the demand for goods and services, within a macroeconomic system. So through supply-side economics it is possible to align the demand with the overall supply of goods and services.
Inflation will depend on the variations of the demand and the supply, but only in the long run.
These kinds of economics are socialistic-like. Because the State uses its own power and resources to make the GDP align with the demand.
Monetarists, led by Friedman, used to say that inflation entirely depends on the variations of the money supply. So they state that if a State increases the public expenditure, by issuing more and more money, this will create inflation. This is based upon the (false) postulate according to which the agents of the monetary circuit like enterprises will increase the prices in the short run and in the medium run.
When it has been proven that it never happens. Inflation entirely depends on the shortage of goods and services. So if there is shortage, the enterprises will be forced to increase the prices to make the demand decrease.
The Monetarist thought and the Classical model are like a poison that poisoned our sacred, socialistic Europe.