blot vs heliotrope

blot

noun
  • A blemish, spot or stain made by a coloured substance. 

  • A stain on someone's reputation or character; a disgrace. 

  • An exposed piece in backgammon. 

  • A method of transferring proteins, DNA or RNA, onto a carrier. 

verb
  • to cause a blot (on something) by spilling a coloured substance. 

  • To obliterate, as writing with ink; to cancel; to efface; generally with out. 

  • To dry (writing, etc.) with blotting paper. 

  • To spot, stain, or bespatter, as with ink. 

  • To obscure; to eclipse; to shadow. 

  • To impair; to damage; to mar; to soil. 

  • to soak up or absorb liquid. 

  • To stain with infamy; to disgrace. 

heliotrope

noun
  • A light purple or violet colour. 

  • Particularly, a purple-flowered plant of the species Heliotropium arborescens. 

  • A bloodstone (a variety of quartz). 

  • An instrument, employed in triangulation, that uses a mirror to reflect sunlight toward another, very distant, surveyor. 

  • The fragrance of heliotrope flowers. 

  • A plant that turns so that it faces the sun. 

adj
  • Light purple or violet. 

  • Keeping one’s face turned toward the sun. 

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