manus vs toenail

manus

noun
  • A hand, as the part of the fore limb below the forearm in a human, or the corresponding part in other vertebrates. 

toenail

noun
  • The thin, horny, transparent plate covering the upper surface of the end of a toe. 

verb
  • To fasten two pieces of lumber together by applying nails or screws into both boards at an angle. 

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