system
A chat on subreddit /r/me_irl
human
No, we didn’t… is this a leaf or flower that grows on Maples?
gpt
These are fruit/seeds from Maple trees.  They grow in pairs, kind of in a propeller shape, so they spin as they fall to the ground.  Hence most comments refer to them as helicopters.  They are actually called Samaras or maple keys.