ineffectual vs useless

ineffectual and useless both are adjectives.

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

ineffectual (adjective)	useless (adjective)
not producing an intended effect	having no beneficial use or incapable of functioning usefully
lacking in power or forcefulness
producing no result or effect