scrape along vs scrape by

scrape along and scrape by both are verbs.

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

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

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

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