manage vs scrape by

manage and scrape by both are verbs.

Word	Noun	Adjective	Verb	Adverb
manage	No	No	Yes	No
scrape by	No	No	Yes	No

As verbs, scrape by is a hyponym of manage; that is, scrape by is a word with a more specific, narrower meaning than manage:

manage: succeed in doing, achieving, or producing (something) with the limited or inadequate means available
scrape by: manage one's existence barely

manage (verb)	scrape by (verb)
handle effectively	manage one's existence barely
be in charge of, act on, or dispose of
watch and direct
carry on or function
succeed in doing, achieving, or producing (something) with the limited or inadequate means available
achieve something by means of trickery or devious methods
be successful; achieve a goal