purple vs stain

purple

verb
  • To dye purple. 

  • To clothe in purple. 

  • To turn purple in colour. 

noun
  • Any of the species of large butterflies, usually marked with purple or blue, of the genus Basilarchia (formerly Limenitis). 

  • Purpura. 

  • The purple haze cultivar of cannabis in the kush family, either pure or mixed with others, or by extension any variety of smoked marijuana. 

  • Any of various species of mollusks from which Tyrian purple dye was obtained, especially the common dog whelk. 

  • Earcockle, a disease of wheat. 

  • A cardinalate. 

  • A color that is a dark blend of red and blue; dark magenta. 

  • Any non-spectral colour on the line of purples on a colour chromaticity diagram or a colour wheel between violet and red. 

  • Cloth, or a garment, dyed a purple colour; especially, a purple robe, worn as an emblem of rank or authority; specifically, the purple robe or mantle worn by Ancient Roman emperors as the emblem of imperial dignity. 

  • Imperial power, because the colour purple was worn by emperors and kings. 

adj
  • Completed in the fastest time so far in a given session. 

  • Extravagantly ornate, like purple prose. 

  • Mixed between social democrats and liberals. 

  • Imperial; regal. 

  • Not predominantly red or blue, but having a mixture of Democrat and Republican support. 

  • Having a colour/color that is a dark blend of red and blue. 

  • Blood-red; bloody. 

stain

verb
  • To treat (a microscopic specimen) with a dye, especially one that dyes specific features 

  • To cause to seem inferior or soiled by comparison. 

  • To coat a surface with a stain 

  • To taint or tarnish someone's character or reputation 

  • To discolour. 

  • To become stained; to take a stain. 

noun
  • A reagent or dye used to stain microscope specimens so as to make some structures visible. 

  • A discoloured spot or area. 

  • Any of a number of non-standard tinctures used in modern heraldry. 

  • A blemish on one's character or reputation. 

  • A substance used to soak into a surface and colour it. 

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