unrewarding vs unappreciated

unrewarding and unappreciated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unrewarding	No	Yes	No	No
unappreciated	No	Yes	No	No

unrewarding (adjective)	unappreciated (adjective)
not rewarding; not providing personal satisfaction	having value that is not acknowledged
	not likely to be rewarded