‘If you say a team member is “responsible” for a task, it means the outcome for that task is solely reliant on that person.
However, in the event they fail to complete it, they are “accountable” for the outcome.
Accountability, therefore, is about ownership of outcomes.
These definitions apply across the hierarchy. e.g. If you’re a person with authority and you must make the right decisions, including hiring and delegating, you’re also an “accountable” person.’
—Nikhil G. Daddikar.