How are respiratory failure and respiratory arrest different?

Respiration: Respiratory failure means the inability to breath enough to take adequate amount of oxygen and get rid of co2 and could be due to lung diseases. Respiratory arrest simply means a person stops breathing, no effort seen.

Partial versus full: The job of the respiratory system, breathing, is to get oxygen from the air into the body ( the oxygen is fuel just like it is for a fire). It is also to eliminate the waste gas which is carbon dioxide. When the respiratory system can not do this job and either oxygen levels drop or carbon dioxide levels in the blood go up it's respiratory failure. If one stopped breathing its respiratory arrest