scratch along vs rub along

scratch along and rub along both are verbs.

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

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

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

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