buckthorn vs murali

buckthorn

noun
  • especially genus Rhamnus, 

  • also genus Frangula, especially Frangula alnus, the alder buckthorn. 

  • especially the common buckthorn or purging buckthorn; Rhamnus cathartica. 

  • Hippophae (family Elaeagnaceae), the sea buckthorn. 

murali

noun
  • The matrimony vine (Lycium barbarum). 

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