Inflation is not about individual prices for the various goods and services in the free market. Those can fluctuate in a zero-inflation environment.
Inflation is a rise in the general price level, caused by the government devaluing the currency.
Having a hard time figuring out where or whether we diverged here. Sounds like we agree that prices have to fluctuate. Do we agree that if prices generally fluctuate up it's inflation and if they fluctuate down it's deflation?