locks vs mane

locks

noun
  • A head of hair; tresses. 

  • Dreadlocks. 

mane

noun
  • Long or thick hair of a person's head. 

  • Longer hair growth on back of neck of an animal, especially a horse or lion 

  • Part of a naval sword between the tang button and the quillon. 

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