Pile of people
A large group of people, either in real life or in a video game, whom you have to fight.
In the last level , we had to fight a big ol’ pile of people.
Pile people
In the aftermath of a hurricane the indigenous population that has become homeless began to build piles out of the debris from other people's homes . This behavior usually occurs on other people's property until the piles become so massive code enforcement forces them to move on to a new location where they then begin to form new piles all this occurs while shooting meth and stealing each other's bicycles, in between probation visits of course.
Code enforcement runs off 3 locations where the pile people have set up camp and stripped bicycles down into nothing but parts, broken electronics, soggy furniture, and infectious human waste.