As nouns the difference between terms and upvalue
is that terms is while upvalue is (computing|programming) a free variable that has been bound (closed over) with a closure.
As a verb upvalue is
to assign a higher value to.
terms
English
Noun
(head)
Statistics
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upvalue
English
Etymology 1
Noun
(
en noun)
(computing, programming) A free variable that has been bound (closed over) with a closure.
Etymology 2
Verb
(upvalu)
To assign a higher value to.