We also have something called mixed inhibition, but we're not going to focus on that in this lecture. So let's begin with competitive inhibition. So what exactly do we mean by competitive inhibition? Well, in some cases, we have an inhibitor that actually resembles the substrate that binds onto the active side. And so what that means is the structure of that inhibitor is similar to the structure of that particular substrate. And because the structure resembles what that means is that inhibitor will bind to that same location where the substrate actually binds to.