Can anyone explain to me what bridging is and what the benefits are? Like I’m five years old.

Specifically using the polygon network. My understanding is it allows you to convert Ethereum based coins on the Ethereum network using different networks such as the polygon network, which usually saves you fees and time and allows you to convert into several different coins, faster and cheaper. Is that basically the point of bridging?

I have to explain bridging and why someone would bridge specifically using polygon network to someone today and Information as possible