acknowledgment vs acknowledge

acknowledgment is a noun but acknowledge is not a noun.

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

acknowledgment (noun)	acknowledge (noun)
a statement acknowledging something or someone
a short note recognizing a source of information or of a quoted passage
the state or quality of being recognized or acknowledged

acknowledgment (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