unacknowledged vs unvalued

unacknowledged and unvalued both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unacknowledged	No	Yes	No	No
unvalued	No	Yes	No	No

unacknowledged (adjective)	unvalued (adjective)
not recognized or admitted	having value that is not acknowledged
not openly acknowledged