subsequently vs yestertime

subsequently

adv
  • Following, afterwards in either time or place. 

  • Accordingly, therefore (implying a logical connection or deduction), consequently. 

yestertime

adv
  • In times past, at a prior time; in the past. 

noun
  • Time previous to the present; the past. 

How often have the words subsequently and yestertime occurred in a corpus of books? (source: Google Ngram Viewer )