Higher prices is just a leading symptom of the disease of inflation , and not the cause of the disease or the disease itself. When one defines inflation as rising prices, people are led to mistakenly consider every possible cause of higher prices as a possible cause of inflation, and thus to mistakenly believe that the cause of inflation can vary from case to case.
The effect of believing that inflation can be caused by an extensive list of things that the mind has no clear-cut way of organizing or holding is that for all practical purposes people are led to regard inflation as causeless.
"Inflation" is the increase in the money supply, and "price inflation" is one of the results of inflation. There is no 1:1 correlation and certainly no time bound correlation between the two, yet the correlation is there... it is simply not quantifiable, as so many things in economics are not quantifiable.