Headline inflation is a measure of the total inflation within an economy and is affected by areas of the market which may experience sudden inflationary spikes such as food or energy. As a result, headline inflation may not present an accurate picture of the current state of the economy. This differs from core inflation

Core inflation

Core inflation is a measure of inflation which excludes certain items that face volatile price movements, notably food and energy.The preferred measure by the Federal Reserve of core inflation in the United States is the core Personal consumption expenditures price index...

, also called underlying inflation, which excludes factors such as food and energy

Energy

In physics, energy is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems...

costs.