Okay kiddo, imagine you have a bunny stuffed animal that you love SO much. You always call it "Bunny" and nobody else can call it by a different name because that's its special name that you gave it.
In science, there are special names that are like Bunny's name - they are called conserved names. They are special because scientists all over the world have agreed to use the same name for the same thing, just like how everyone agreed that your Bunny is called "Bunny".
Conserved names are important because they help scientists talk to each other and understand each other's research. If they all used different names for the same thing, it would be really confusing! So just like how you and your friends can all talk about "Bunny" and know exactly what animal you're talking about, scientists can use conserved names to communicate clearly and easily.