apology vs acknowledgment

apology and acknowledgment both are nouns.

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

As nouns, acknowledgment is a hypernym of apology; that is, acknowledgment is a word with a broader meaning than apology:

Other hypernyms of apology include acknowledgement.

apology (noun)	acknowledgment (noun)
a poor example	a statement acknowledging something or someone
an expression of regret at having caused trouble for someone	a short note recognizing a source of information or of a quoted passage
a formal written defense of something you believe in strongly	the state or quality of being recognized or acknowledged