As nouns the difference between washback and cashback
is that washback is the way that tests affect how learners acquire and use a language or washback can be a large vessel used for fermentation in a distillery while cashback is .
washback
English
Etymology 1
Noun
(-)
The way that tests affect how learners acquire and use a language.
Etymology 2
.
Noun
(
en noun)
A large vessel used for fermentation in a distillery.