beggar-ticks vs black jack

beggar-ticks

noun
  • Any of several plants, of the genus Bidens, having yellow flowers and prickly fruit. 

  • The barbed fruit of these plants, which sticks to clothing and to animal fur. 

black jack

noun
  • Bidens spp., from the family of Asteraceae 

  • Sphalerite. 

  • Caranx lugubris, a gamefish 

How often have the words beggar-ticks and black jack occurred in a corpus of books? (source: Google Ngram Viewer )