Prunus laurocerasus vs cherry laurel

Prunus laurocerasus

cherry laurel

noun
  • Prunus laurocerasus, an evergreen shrub, native to regions bordering the Black Sea in southwestern Asia. 

  • Prunus caroliniana, native to the southeastern United States. 

How often have the words Prunus laurocerasus and cherry laurel occurred in a corpus of books? (source: Google Ngram Viewer )