As nouns the difference between keyframes and tweening
is that keyframes is while tweening is (animation) a technique in film animation for generating intermediate frames such that one image evolves smoothly into the next.
As a verb tweening is
.
tweening
English
Verb
(head)
Noun
(
wikipedia tweening)
(
en noun)
(animation) A technique in film animation for generating intermediate frames such that one image evolves smoothly into the next.