scratch along vs scrape by

scratch along and scrape by both are verbs.

Word	Noun	Adjective	Verb	Adverb
scratch along	No	No	Yes	No
scrape by	No	No	Yes	No

As verbs, scratch along and scrape by are synonyms defined as:

Other synonyms of scratch along include rub along, scrape along, squeak by, squeeze by.

scratch along (verb)	scrape by (verb)
manage one's existence barely	manage one's existence barely