mea culpa vs acknowledgment

mea culpa and acknowledgment both are nouns.

Word	Noun	Adjective	Verb	Adverb
mea culpa	Yes	No	No	No
acknowledgment	Yes	No	No	No

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

Other hypernyms of mea culpa include acknowledgement.

mea culpa (noun)	acknowledgment (noun)
an acknowledgment of your error or guilt	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