interference vs intrusion

interference

noun
  • The act of interfering with something, or something that interferes. 

  • The illegal obstruction of an opponent in some ball games. 

  • An effect caused by the superposition of two systems of waves. 

  • In United States patent law, an inter partes proceeding to determine the priority issues of multiple patent applications; a priority contest. 

  • The interruption of the line between an attacked piece and its defender by sacrificially interposing a piece. 

  • The situation where a person who knows two languages inappropriately transfers lexical items or structures from one to the other. 

  • A distortion on a broadcast signal due to atmospheric or other effects. 

verb
  • To interfere. 

intrusion

noun
  • The forcible inclusion or entry of an external group or individual; the act of intruding. 

  • The insertion of a phoneme into the pronunciation of a word despite its absence from the spelling. (e.g. intrusive r) 

  • A structure that lies within a historic district but is nonhistoric and irrelevant to the district. 

  • Magma forced into other rock formations; the rock formed when such magma solidifies. 

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