Another synonym could be 'frightening yarn'. 'Yarn' is an old - fashioned term for a story, and when combined with 'frightening', it clearly indicates a story that is meant to scare. This kind of story often plays on people's fears, whether it's the fear of the unknown, of something lurking in the dark, or of supernatural forces.
A synonym for 'funny' could be 'humorous'. Here's a humorous story. There was a magician who was walking down the street and turned into a grocery store. (It's a play on words as 'turn into' has different meanings). Another example is using 'comical' as a synonym. A man went to the dentist. The dentist said, 'You need a crown.' The man replied, 'I know, right? I am a king!' This shows a comical misunderstanding.
Once upon a time, there was a small 'tiny' creature. It lived in a 'little' hole. One day, it went on a 'journey' which was actually just a'strip' through the forest. It was looking for 'food' or'sustenance'.
A synonym story could be like this. Let's take the word 'big'. One day, a little boy was looking at a huge elephant at the zoo. Instead of using 'big', he could say 'large' or 'enormous' to describe the elephant. It was an amazing sight, and the synonyms added more color to his description.
Well, a synonym short story is likely a story where the writer deliberately replaces common words with their synonyms. This can make the story more interesting and challenging for the reader. It can also show off the writer's vocabulary skills. Suppose the story is about a journey. Instead of using 'walk' all the time, the writer might use'stroll', 'amble', 'hike' depending on the context and mood of the part of the story.