ineffective vs useless

ineffective and useless both are adjectives.

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

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