receipt vs acknowledgment

receipt and acknowledgment both are nouns.

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

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

Other hypernyms of receipt include acknowledgement.

receipt (noun)	acknowledgment (noun)
the act of receiving	a statement acknowledging something or someone
an acknowledgment (usually tangible) that payment has been made	a short note recognizing a source of information or of a quoted passage
	the state or quality of being recognized or acknowledged

receipt (verb)	acknowledgment (verb)
mark or stamp as paid
report the receipt of