aristo vs viscount

aristo

noun
  • An aristocrat 

  • A wealthy man, especially married, who has sexual affairs with much younger women and spends money on them 

viscount

noun
  • A member of the peerage, above a baron but below a count or earl. 

  • Any of various nymphalid butterflies of the genus Tanaecia. Other butterflies in this genus are called earls and counts. 

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