contamination vs microbes

contamination

noun
  • A process whereby words with related meanings come to have similar sounds. 

  • The influence of one form (often from a foreign language) on the historical development of another form to which it may be related in meaning. 

  • The act or process of contaminating 

  • Something which contaminates. 

  • The process of making a material or surface unclean or unsuited for its intended purpose, usually by the addition or attachment of undesirable foreign substances. 

microbes

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