Ever wonder why prices just keep going up? Most people blame it on one thing, but there are actually two totally different inflation mechanics at play, and understanding the difference matters if you want to make sense of what's happening in markets.

Let me break down the two main types. First, there's cost-push inflation – this happens when the supply of something gets squeezed while demand stays the same. Think about what happened with oil and natural gas. Refineries need crude oil to make fuel, power plants need gas to generate electricity. When geopolitical tensions, wars, or natural disasters suddenly cut supply, prices shoot up because people still need to drive and heat their homes. The shortage forces prices higher, not because people want more – because there's less available.

We saw this play out recently too. Pipeline shutdowns, supply chain disruptions, labor cost increases – all classic cost-push scenarios. When production becomes more expensive or harder to maintain, companies have no choice but to raise prices just to stay afloat.

Now demand-pull inflation is the opposite beast. This is what happens when the economy gets stronger, people have more money in their pockets, and they actually want to spend it. Employment rises, wages go up, confidence builds. But here's the catch – factories and suppliers can't keep up with how fast people want to buy things. You end up with too many dollars chasing too few goods, which is exactly what economists call it.

The pandemic recovery was a textbook example. After vaccines rolled out in late 2020, the global economy started opening up fast. People had been stuck at home for nearly a year. Suddenly everyone wanted to travel, buy homes, renovate, consume. But factories were still ramping up production. Lumber prices skyrocketed, copper hit near-record highs, airline tickets and hotel rooms kept climbing. The demand-pull inflation was real because supply couldn't match the appetite people had to spend.

Here's what's interesting – central banks like the Federal Reserve try to maintain around 2% inflation as a sign of healthy economic growth. But when you get either of these inflation types spinning too hard, that's when things get tricky for markets and asset prices. Recognizing which type you're dealing with actually helps you understand whether it's temporary or structural. Cost-push usually corrects when supply recovers. Demand-pull needs either demand to cool or supply to catch up – or interest rates to rise and slow spending.