toothless vs ineffectual

toothless and ineffectual both are adjectives.

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

toothless (adjective)	ineffectual (adjective)
lacking teeth	not producing an intended effect
lacking necessary force for effectiveness	lacking in power or forcefulness
	producing no result or effect