graffiti vs suspicion

graffiti

noun
  • Drawings or words drawn on a surface in a public place, usually made without authorization. 

  • Informal inscriptions, figure drawings, etc., as opposed to official inscriptions. 

verb
  • To mark a surface with such images. 

suspicion

noun
  • The imagining of something without evidence. 

  • Uncertainty, doubt. 

  • The act of suspecting something or someone, especially of something wrong. 

  • A trace, or slight indication. 

  • The condition of being suspected. 

verb
  • To suspect; to have suspicions. 

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