azedarach vs bead tree

azedarach

noun
  • An Asiatic tree (Melia azedarach), common in the southern United States, commonly called bead tree, chinaberry, etc. 

  • The bark of the roots of the azedarach, used as a cathartic and emetic 

bead tree

noun
  • Melia azedarach, a deciduous or semi-evergreen tree with poisonous fruit, native to India, Southeast Asia, and northern Australia. 

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