slur vs stigma

slur

noun
  • A mark, stain, or smear; (by extension) a slight occasion of reproach. 

  • In knitting machines, a device for depressing the sinkers successively by passing over them. 

  • An insinuation or innuendo. 

  • An act of running one's words together; poor verbal articulation. 

  • A disparaging insult or slight, particularly one used to denigrate a specific group. 

  • A set of notes that are played legato, without separate articulation. 

  • The symbol indicating a legato passage, written as an arc over the slurred notes (not to be confused with a tie). 

verb
  • To run together; to articulate poorly. 

  • To insult or slight. 

  • To play legato or without separate articulation; to connect (notes) smoothly. 

  • To soil; to sully; to contaminate; to disgrace. 

  • To cover over; to disguise; to conceal; to pass over lightly or with little notice. 

  • To cheat, as by sliding a die; to trick. 

stigma

noun
  • A scar or birthmark. 

  • A mark on the body corresponding to one of the wounds of the Crucifixion on Jesus' body, and sometimes reported to bleed periodically. 

  • A mark of infamy or disgrace. 

  • A visible sign or characteristic of a disease. 

  • An outward sign; an indication. 

  • A ligature of the Greek letters sigma and tau, (Ϛ/ϛ). 

  • The sticky part of a flower that receives pollen during pollination. 

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