That is called exaggeration, the mile high ice-cream can not be a thing, therefore you were exaggerating .
Answer:
The thing that makes the writing assignments easy or difficult depends on the topic at hand and as well as the rules in the forms of writing used. The sense of difficulty relies on your interest towards the topic. If you know the topic will very well and is passionate about it, you will not have much trouble finding words to fill your writing assignments. Furthermore, certain restrictions such as word or paragraph limits may hinder you from writing your best.
The answer is:hyphen
Hope this helped :)