Aaron's rod vs Jack-in-the-pulpit

Aaron's rod

noun
  • Goldenrod, the Solidago genus of North American plants with yellow flowers. 

  • Hylotelephium telephium (syn. Sedum telephium; orpine, livelong, or live-forever). 

  • A rod-shaped molding decorated with an entwined snake, and sometimes leaves, vines, and/or scrolls. 

  • Verbascum thapsus, the great mullein, common mullein, or hag-taper. 

Jack-in-the-pulpit

noun
  • A plant in the northeastern North America, Arisaema triphyllum. 

  • Any plant in the genus Arisaema. 

  • Cat's cradle. 

  • A woodland plant of northern Europe, Arum maculatum. 

How often have the words Aaron's rod and Jack-in-the-pulpit occurred in a corpus of books? (source: Google Ngram Viewer )