To "drop" something means to let it fall from your hand or to cause it to fall from a higher place to a lower place.

If you want to say that something has fallen from a higher place and landed on the ground or another surface, you can say "it dropped" or "it fell."

For example:

The apple dropped from the tree and landed on the ground.
The vase fell off the shelf and broke on the floor.

If you want to say that something has fallen off your body or out of your possession, you can say "it fell off" or "it sppped off."

For example:

My hat fell off my head when I was running.
The bracelet sppped off my wrist and fell on the ground.

I hope this helps! Let me know if you have any other questions.