As nouns the difference between terms and washback
is that terms is while 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.
terms
English
Noun
(head)
Statistics
*
----
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.