code: def words_similarity(self, words1, words2):
      w1 = self.check_words(words1)
      w2 = self.check_words(words2)
      return self._model.n_similarity(w1, w2) if w1 and w2 else 0.0
  
imports: from numpy import array
  from gensim import matutils
label_desc: Use image node_id 6 for calling the WordRelatedness obj's underlying member method code with example usage: obj.words_similarity(words1, words2) and returns: unknown