You can interchange, if you could use one assume you could replace it with the other. The only define difference for me is I will use entire if I could have used whole but to further emphasise. It sounds greater when someone says "The entire planet vanished" rather than if they were to say "The whole planet vanished". If you were trying to make something sound even greater you would say "The whole entire planet vanished" which in turn makes the word "entire" feel as if that is the most important part of the sentence. Showing the large amount. Sorry if i didn't explain this properly, I had never actually thought about it until now lol.