goof-off vs ne'er-do-well

goof-off and ne'er-do-well both are nouns.

Word	Noun	Adjective	Verb	Adverb
goof-off	Yes	No	No	No
ne'er-do-well	Yes	No	No	No

As nouns, goof-off and ne'er-do-well are synonyms defined as:

Other synonyms of goof-off include goldbrick, good-for-naught, good-for-nothing, no-account.

goof-off (noun)	ne'er-do-well (noun)
an idle worthless person	an idle worthless person