skull, skulls, scalps

Definition:

The term "skull" refers to the bony, skeletal structure of the head of a person or animal.

Sometimes the term "skull" means "head," as in the phrase "shave your skull."
The term "Place of the Skull" was another name for Golgotha, where Jesus was crucified.
This term could also be translated as "head" or "head bone."
The "scalp" is the skin that covers the top of the skull.