scratch along vs scrape along

scratch along and scrape along both are verbs.

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

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

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

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