Here’s a fun fact; did you know that there’s a frypan called the French skillet, only with much higher, sloped sides? It looks rather like a slight cross between the fry pan and skillet.
A quick research on the meaning of frypan and skillet in the dictionary would lead you to the same thing - they’re both frying pans. They only truly differ when it comes to their practical aspect where you’ll notice clear differences through factors we'll go through below.