useless vs ineffective

useless and ineffective both are adjectives.

Word	Noun	Adjective	Verb	Adverb
useless	No	Yes	No	No
ineffective	No	Yes	No	No

useless (adjective)	ineffective (adjective)
having no beneficial use or incapable of functioning usefully	not producing an intended effect
	lacking in power or forcefulness
	lacking the ability or skill to perform effectively; inadequate