Difference between lie and fiction

Difference between lie and fiction :

Here is my point of view about lies and fiction.

Fiction means :~ the class of literature comprising works of imaginative narration, especially in prose form.

lie means :~ a false statement made with deliberate intent to deceive; an intentional untruth; a falsehood.

There is many arguments going on among the people about word like different between "Alternative fact "and" fiction".

Fiction mean imagination about it and fact mean the existence of anything.

For example: 

The hero Iron-man. There is no one like Iron-man in this world .it is only our imagination. Though we believe in it as a fact that whenever we are in trouble some kind of Iron-man came and implore us which is totally based on our fiction.

This is based on lie but present as fact.

We also inspire our children to watch that type of movie or T.V. serials. We present fiction before them as a fact.

thank you