no-count vs good-for-nothing

no-count is not a noun while good-for-nothing is a noun.

Word	Noun	Adjective	Verb	Adverb
no-count	No	Yes	No	No
good-for-nothing	Yes	Yes	No	No

As adjectives, no-count and good-for-nothing are synonyms defined as:

no-count and good-for-nothing: without merit; of little or no value or use

Other synonyms of no-count include good-for-naught, meritless, no-account, no-good, sorry.

no-count (noun)	good-for-nothing (noun)
	an idle worthless person

no-count (adjective)	good-for-nothing (adjective)
without merit; of little or no value or use	without merit; of little or no value or use