Okay kiddo, let me explain gusset plate to you in a way that's easy to understand.
Imagine you're building a toy house with sticks and connectors. You want your house to be strong and stable, so you need to use extra pieces to keep it together. One of these extra pieces is called a gusset plate.
A gusset plate is like a flat metal piece that you use to connect two or more pieces of wood or metal. It's sort of like a big paper clip that holds things together.
Let's say you have a big square piece of wood that you want to connect to two smaller pieces of wood. You can use gusset plates to attach the small pieces to the big one. You just put the gusset plate on top of the wood pieces where they meet, and then you screw or nail it in place.
Gusset plates help make your structure strong because they spread out the weight or force across a larger area. They also help keep everything in place so that nothing wiggles or falls apart. That's why they're important.
Does that make sense, kiddo?