speculative fiction vs sword and sorcery

speculative fiction

noun
  • A class of fiction involving fantastic, supernatural or futuristic elements, including fantasy, horror, and science fiction, dealing with worlds, themes, and characters not part of everyday life. 

  • A particular work belonging to this class. 

sword and sorcery

noun
  • A genre of narratives—including short stories, novels, television shows, films, and computer games—which combines wizardry and other fantastical supernatural elements with violent combat using pre-modern weaponry. 

adj
  • Of or pertaining to a genre of narratives—including short stories, novels, television shows, films, and computer games—which combines wizardry and other fantastical supernatural elements with violent combat using pre-modern weaponry. 

How often have the words speculative fiction and sword and sorcery occurred in a corpus of books? (source: Google Ngram Viewer )