A droll yarn. 'Droll' means odd or whimsical in a funny way, and 'yarn' is another word for a story. So a droll yarn is a good alternative for a funny story.
Well, 'noticed' is another word for'seen'. When it comes to 'novel', 'original' is a great alternative. The word'seen' implies the act of visually perceiving something, and 'noticed' has a similar meaning but might imply a bit more of an awareness. 'Novel' means new and different, and 'original' also gives the sense of being new and not a copy.
Denouement. It is a French term that has been adopted into English to specifically mean the final part of a story where all the loose ends are tied up, secrets are revealed, and the story reaches its final resolution. It often comes after the climax of the story and is a more literary or sophisticated way of referring to the end of a story.