Question

What is the difference between reforestation and afforestation?

Answer 1

Here is your answer-

Meaning of both words is the same,
Reforestation or afforestation is a practice of planting small plants in a degraded forest area and taking care of them up to when they grow big enough to remake a forest again, refers to planting trees where forests have been vanished.

Answer 2

Afforestation refers to the planting of trees on areas that were not covered with forests.  

Reforestation refers to the re-planting of trees on areas that were once covered with forests.

Planting of forests on lands that have previously contained forests but that have been converted to some other use is reforestation. On the other ahnd, the establishment of trees on an area that has lacked forest cover for a very long time or has never been forested is afforestation.