aloha vs acknowledgement

aloha and acknowledgement both are nouns.

Word	Noun	Adjective	Verb	Adverb
aloha	Yes	No	No	No
acknowledgement	Yes	No	No	No

As nouns, acknowledgement is a hypernym of aloha; that is, acknowledgement is a word with a broader meaning than aloha:

aloha: an acknowledgment that can be used to say hello or goodbye (aloha is Hawaiian and ciao is Italian)
acknowledgement: a statement acknowledging something or someone

Other hypernyms of aloha include acknowledgment.

aloha (noun)	acknowledgement (noun)
an acknowledgment that can be used to say hello or goodbye (aloha is Hawaiian and ciao is Italian)	a statement acknowledging something or someone
	the state or quality of being recognized or acknowledged