interruption vs obtrusion

interruption

noun
  • The act of interrupting, or the state of being interrupted. 

  • A time interval during which there is a cessation of something. 

obtrusion

noun
  • An interference or intrusion. 

  • An encroachment beyond proper limits. 

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