A bank deposit is INVIOLATE because it is difficult to be stolen from a
vault.

If you are asking if the word "inviolate" is correct here, then your answer is yes. Inviolate means it is typically safe from danger.

a myth is something that is told for many years that u go looking for and cant find and a truth is something that u can find in real life and can be story's of for example:

mermaid's and unicorns: u can't find them at all so they can be a myth cause u hear story's about them once u go looking for them u won't find them.

dinassours(can't spell): u hear story's about them at school by ur friends and one day ur dad takes u to a museum and u find fossils of them so u realize they are real and not fake.

fiction/fantasy

explanation: