Currently Vocab does not have ghost reviews. Also, if you get it wrong, it goes down 1 SRS level.
I think ghost reviews doesnât make as much sense for vocab as it does for grammar (but I could be wrong and am open to other opinions), because grammar generally has a more âglobalâ effect on a sentence (may be affected by tense, politeness, for examples), whereas vocab is more âlocalâ to the sentence (you generally get the word ârightâ or âwrongâ, there doesnât tend to be much conjugation, afaict).
[ETA: BTW, I switched over from âmanualâ to âclozeâ a while back. Cloze is more difficult because it requires production (of the Japanese kana) rather than just recognition (of the meaning, into an English equivalent). But still, I donât think even cloze reviews for vocab would benefit much from ghosts. ]