Technical Term for Incorrect Homonym/Synomym Error
Solution 1:
Regarding the blunders we often find in machine translation, let me offer polysemy error.
polysemy: multiplicity of meaning
(Webster's Unabridged)
When a computer encounters a polysemant, it often fails to choose the correct meaning in context, which results in a polysemy error that we often find humorous.
By the same token, you could use homonymy errors, when the mixed-up words are homonyms or homographs.