This is the 10269th most frequent Catalan word.
piles
Batteries.
In this sentence, "piles" refers to batteries.
He comprat piles per al comandament de la tele.
I bought batteries for the TV remote.
Here, "piles" again means batteries, specifically used ones being recycled.
Aquest matà he anat a reciclar piles usades.
This morning I went to recycle used batteries.
In this sentence, "piles" means stacks or heaps, indicating a large quantity.