These are two different words. One comes from "scrap" (noun: the remainder of something). The other comes from scratching (verb: chop, rake or scratch something, usually with a tool).
Scrapping - Translation of a broken phrase in the Free Dictionary https://www.thefreedictionary.com/scrapping 2. extract from the written. 3. (Metallurgy). but. waste or used products, esp metal, are often collected and recycled. b. (as a modifier): scrap metal. 4. (plural) discarded products. vb (tr), scraps, scrap or scrap.
Scraping - Dictionary Translator https://www.thefreedictionary.com/scraping Define curettage. scraping synonyms, pronunciation scraping, scraping translation, English dictionary definition of scraping. v. scraper, scrap, scrap. v. tr. 1. Remove from the surface with strong impacts of an edged or coarse tool.
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