Tyrian purple vs argaman

Tyrian purple

noun
  • A deep purple colour, tinted with red, like that of the dye. 

  • A deep purple dyestuff obtained from the bodies of mollusks of the genus Murex (now moved to the genus Haustellum). 

adj
  • Of a deep purple colour, tinted with red, like that of the dye. 

argaman

noun
  • An Israeli wine grape. 

  • A particular purple dye or color. 

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