Competitive inhibitor: This is an inhibitor that competes with the substrate for binding at the active site of an enzyme. It's like two cars racing for one parking spot.
Non-competitive inhibitor: This type of inhibitor binds to an enzyme at a location other than its active site, changing its shape and making it less effective. Imagine someone letting air out of your car’s tires - you can still drive, but not as well.
Reversible inhibitor: An inhibitor that can attach and detach from the enzyme it inhibits. It's like a temporary detour sign on your route that can be removed once construction is done.