But there is another type of popcorn
It looks similar. You might find it on the ceiling in your house. In a 25 year old house the popcorn starts to look dirty. Try to paint it and it comes down in globs. Try to dust it it comes down like snow. So today I spent several hours removing the "popcorn" from my ceiling. I now have smooth clean celings.
I like the edible popcorn much better!!