no-count vs no-good

no-count and no-good both are adjectives.

Word	Noun	Adjective	Verb	Adverb
no-count	No	Yes	No	No
no-good	No	Yes	No	No

As adjectives, no-count and no-good are synonyms defined as:

Other synonyms of no-count include good-for-naught, good-for-nothing, meritless, no-account, sorry.

no-count (adjective)	no-good (adjective)
without merit; of little or no value or use	returned for lack of funds
	without merit; of little or no value or use