harvestman vs house spider

harvestman

noun
  • An order of terrestrial, non-venomous arachnids with often very long legs: Opiliones. 

  • A field-worker who works to gather in the harvest. 

house spider

noun
  • daddy long-legs spiders, of the Pholcidae family; 

  • yellow sac spider, Cheiracanthium inclusum, a common house spider worldwide. 

  • American house spider, Parasteatoda tepidariorum, a cobweb spider; 

  • black house spider, Badumna insignis, an Australian spider also found in New Zealand; 

  • tiny house spider, Oonops domesticus 

  • brown house spider, Steatoda grossa, a spider with cosmopolitan distribution; 

  • giant house spider, Eratigena atrica, syn. Tegenaria gigantea; 

  • hobo spider, Tegenaria agrestis, aggressive house spider; 

  • southern house spider, Kukulcania hibernalis; 

  • domestic house spider, Tegenaria domestica; 

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