EFFICIENT and EFFECTIVE

EFFICIENT is performing or functioning in the best possible manner with the least waste of time and effort.

                                        while

EFFECTIVE is producing the intended or expected result.



EFFICIENCY is DOING THINGS RIGHT.

                                            while

EFFECTIVENESS is DOING RIGHT THINGS.



EFFICIENCY is about doing things in an optimal way.

                                          while

EFFECTIVENESS is about doing right task, completing activities and achieving goals.


EFFICIENCY refers how well something is done.

                                       while

EFFECTIVENESS refers to how useful something is.

How about you? How do you define and differentiate EFFECTIVE and EFFICIENT? EFFECTIVENESS and EFFICIENCY?