What is the relationship between inflation and rising prices?

Inflation measures how much more expensive a set of goods and services has become over a certain period, usually a year.Inflation is the rate of increase in prices over a given period of time. Inflation is typically a broad measure, such as the overall increase in prices or the increase in the cost of living in a country. But it can also be more narrowly calculated—for example, for certain goods, such as food, or for services, such as school tuition. Whatever the context, inflation represents how much more expensive the relevant set of goods and/or services has become over a certain period, most commonly a year.