As adjectives the difference between undervalued and underused
is that undervalued is assigned an in appropriately low value while underused is used less than normal or desirable.
As verbs the difference between undervalued and underused
is that undervalued is (undervalue) while underused is (underuse).
underused
English
Adjective
(-)
Used less than normal or desirable.
Verb
(head)
(underuse)