acknowledgeable vs acknowledge

acknowledgeable is an adjective but acknowledge is not an adjective.

Word	Noun	Adjective	Verb	Adverb
acknowledgeable	No	Yes	No	No
acknowledge	No	No	Yes	No

acknowledgeable (adjective)	acknowledge (adjective)
capable of being acknowledged

acknowledgeable (verb)	acknowledge (verb)
	accept as legally binding and valid
	accept (someone) to be what is claimed or accept his power and authority
	declare to be true or admit the existence or reality or truth of
	express obligation, thanks, or gratitude for
	report the receipt of
	express recognition of the presence or existence of, or acquaintance with