ephemerality (noun)

1. In the world of fantasy, magical creatures and enchanted places are often characterized by their ephemerality, existing only for a fleeting moment before disappearing.

2. Why did the ghost become a comedian? Because he loved the ephemerality of laughter - it disappears just as quickly as it appears!

3. In comics, the superhero's power is often portrayed with ephemerality, allowing them to disappear or rapidly move from one place to another.

4. The beauty of sunset is often associated with its ephemerality, as it lasts for a very short time but creates a romantic ambiance.