My comment was meant to provoke you to figure out the difference between a word and a vocabulary.
No, it is not right in your sentence which is not logical, by the way. Vocabulary is not right either.
Vocabulary=all words in a particular language.
You can not learn all English words a day. Can you???
Vocabularies=set of specialized words or specialist words in a language like General Medicine Vocabulary, Orthopaedic vocabulary or Radiology vocabulary.