mulberry vs purpure

mulberry

adj
  • Of a dark purple color tinted with red. 

noun
  • Any of several trees, of the genus Morus, having edible fruits. 

  • The fruit of this tree. 

  • A dark purple colour tinted with red. 

purpure

adj
  • In blazon, of the colour purple. 

noun
  • A purple colour on a coat of arms, represented in engraving by diagonal parallel lines 45 degrees clockwise. 

  • purpure 

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