Misapplication implies a negative outcome from using something wrongly. The engineer's misapplication of the instructions caused the machine to malfunction.
Pro Tip 2/3
Intentional or Accidental
Misapplication can refer to both intentional abuse or an honest mistake. His misapplication of the technique was due to a lack of understanding.
Pro Tip 3/3
Context Specific
The impact of misapplication can vary greatly depending on the context. In medicine, misapplication of a treatment can be extremely dangerous.