scratching vs scraping

scratching and scraping both are nouns.

Word	Noun	Adjective	Verb	Adverb
scratching	Yes	No	No	No
scraping	Yes	No	No	No

As nouns, scratching and scraping are synonyms defined as:

Other synonyms of scratching include scrape, scratch.

scratching (noun)	scraping (noun)
a harsh noise made by scraping	a deep bow with the foot drawn backwards (indicating excessive humility)
	a harsh noise made by scraping
	(usually plural) a fragment scraped off of something and collected