neem vs white cedar

neem

noun
  • Azadirachta indica, a large, mostly evergreen tree from India, whose seeds yield the insecticide azadirachtin. 

white cedar

noun
  • The chinaberry, Melia azedarach. 

  • The Atlantic white cypress, Chamaecyparis thyoides. 

  • The Mexican white cedar, Cupressus lusitanica 

  • An evergreen coniferous tree of the family Cupressaceae, native to the northeastern US and southeastern Canada, Thuja occidentalis. 

  • Tabebuia heterophylla, of the Caribbean and South America. 

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