Learn English Difference between Efficient VS Effective - and Efficiency VS Effectiveness 

Hello from Mauritius island . I thank you very much for for this very clear explanation and distinction. You made my day !!! Joel

Thank you very much for a very clear explaination

It's an effective lesson. The efficiency of your efforts are high. You didn't waste your time making this video. I have got an efficient amount of knowledge of the difference between these words.

It helped a lot! Thank you!

I watched this video to learn difference between 'efficient' and 'effective' and it was very effective! Thank you from South Korea😆

Hello from France! Thank you, Teacher! Great explanation!

Hey John, its me ninja I always support you and Sarah, Danny!! See you soon

Thanks for the video again.

Thank you.

Effectiveness: achievement of important goals Efficiency: achievement of any goals (important or not) optimizing resources

I just wanted to know the effectiveness of my understanding ability by writing some comments using those words.

Still confused. Would have been nice to see how you'd use the same example, but using efficient in one and effective in another. E.g. She is very efficient at studying. She is very effective at studying.