acknowledge vs apologize

acknowledge and apologize both are verbs.

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

acknowledge (verb)	apologize (verb)
accept as legally binding and valid	acknowledge faults or shortcomings or failing
accept (someone) to be what is claimed or accept his power and authority	defend, explain, clear away, or make excuses for by reasoning
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