This is the 2679th most frequent Spanish word.
falla
Fault, flaw, failure, or defect.
In this case, 'falla' refers to an error or defect in a system.
La falla en el sistema provocó el apagón.
The system's fault caused the blackout.
Here, 'falla' is used to denote a flaw or imperfection.
Contestaron que la falla de origen estaba en los planos.
They responded that the fault of origin was in the plans.
In this sentence, 'falla' refers to a fracture or break in the Earth's crust.