This is the 12908th most frequent Spanish word.
pastillas
Pills or tablets.
Here, 'pastillas' is used to refer to medication in pill form.
Compré unas pastillas para el dolor de cabeza.
I bought some pills for the headache.
In this context, 'pastillas' means pads, specifically brake pads.
Las pastillas de freno del coche necesitan ser cambiadas.
The brake pads of the car need to be replaced.
Here, 'pastillas' indicates mints or lozenges.