mauve vs petunia

mauve

noun
  • The colour of this dye; a pale purple or violet colour. 

  • A bright purple synthetic dye. 

adj
  • Having a pale purple colour. 

petunia

noun
  • A dark purple colour, like that of some petunia flowers. 

  • Any of the flowering plants of genus Petunia, of which most garden varieties are hybrids. 

  • a homosexual 

adj
  • Of a dark purple colour, like that of some petunia flowers. 

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