impotent vs ineffective

impotent and ineffective both are adjectives.

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

impotent (adjective)	ineffective (adjective)
lacking power or ability	not producing an intended effect
(of a male) unable to copulate	lacking in power or forcefulness
	lacking the ability or skill to perform effectively; inadequate