I am reading a story were the author (his first attempt to write) use a lot of invented words to name beings, properties and deities. The text is supra-saturated with such words, e.g. the first 2 paragraphs (146 words) he have 5 invented words. The list of invented words grows larger as you advance the reading as does the confusion in my mind.
So, how many words are safe to invent in a story?
Does the length of the story (5k vs 90k) gives you the possibility to throw in more fancy words?