The general understanding is that the continuous rise in the price of commodities, goods and services is called inflation. But actually, it is the other way around. Inflation is not just the price increase of commodities but also the declining value of a currency and, by extension, the declining purchasing power. So, a thing that could be purchased for Rs.100 last year will cost more this year due to inflation. There are several factors that cause inflation, but one of the primary ones is when the government prints new currency and puts it into the economy by spending on infrastructure, rising salaries, etc. The value of the existing currency falls. So, inflation is basically the fall in purchasing power of the currency and not the rise in the prices of commodities.