bowing vs scraping

bowing and scraping both are nouns.

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

As nouns, scraping is a hyponym of bowing; that is, scraping is a word with a more specific, narrower meaning than bowing:

bowing: bending the head or body or knee as a sign of reverence or submission or shame or greeting
scraping: a deep bow with the foot drawn backwards (indicating excessive humility)

Other hyponyms of bowing include genuflection, genuflexion, kotow, kowtow, scrape, salaam.

bowing (noun)	scraping (noun)
managing the bow in playing a stringed instrument	a deep bow with the foot drawn backwards (indicating excessive humility)
bending the head or body or knee as a sign of reverence or submission or shame or greeting	a harsh noise made by scraping
	(usually plural) a fragment scraped off of something and collected

bowing (adjective)	scraping (adjective)
showing an excessively deferential manner