impact vs rash

impact

verb
  • To collide or strike, the act of impinging. 

  • To stamp or impress onto something. 

  • To significantly or strongly influence or affect; to have an impact on. 

  • To compress; to compact; to press into something or pack together. 

noun
  • A significant or strong influence or effect. 

  • A forced impinging. 

  • The striking of one body against another; collision. 

  • The force or energy of a collision of two objects. 

rash

verb
  • Chiefly followed by against, at, or upon: to collide or hit. 

  • Chiefly followed by away, down, off, out, etc.: to pluck, pull, or rip (something) violently. 

  • To emit or issue (something) hastily. 

  • To forcefully move or push (someone or something) in a certain direction. 

  • Of rain: to fall heavily. 

  • To move forcefully, hastily, or suddenly; to dash, to rush. 

  • Usually followed by up: to prepare (something) with haste; to cobble together, to improvise. 

  • To break (something) forcefully; to smash. 

adj
  • Acting too quickly without considering the consequences and risks; not careful; hasty. 

noun
  • Chiefly preceded by a descriptive word: a fabric with a smooth texture woven from silk, worsted, or a mixture of the two, intended as an inferior substitute for silk. 

  • An area of inflamed and irritated skin characterized by reddened spots that may be filled with fluid or pus; also, preceded by a descriptive word (rare or obsolete), an illness characterized by a type of rash. 

  • An irregular distribution or sprinkling of objects resembling a rash (sense 1). 

  • An outbreak or surge in problems; a spate, string, or trend. 

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