As nouns the difference between terms and castoff
is that terms is while castoff is something that has been rejected or discarded; a reject.
As an adjective castoff is
discarded, rejected.
terms
English
Noun
(head)
Statistics
*
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castoff
English
Noun
(
en noun)
something that has been rejected or discarded; a reject
Adjective
(-)
discarded, rejected
Alternative forms
* cast-off