What is the difference between scraping and scrapping?

Scraping means:"To remove (an outer layer, for example) from a surface by forceful strokes "

Whereas scrapping means:

1. Discard or remove from service (a retired, old, or inoperative vehicle, vessel, or machine), esp. so as to convert it to scrap metal.

2. Abolish or cancel (something, esp. a plan, policy, or law) that is now regarded as unnecessary, unwanted, or unsuitable