junk e-mail vs spam

junk e-mail

spam

verb
  • To send spam (i.e. unsolicited electronic messages) to a person or entity. 

  • To post the same text repeatedly with disruptive effect; to flood. 

  • To do something rapidly and repeatedly. 

  • To send spam (i.e. unsolicited electronic messages.) 

noun
  • Unsolicited bulk electronic messages. 

  • A type of tinned meat made mainly from ham. 

  • Any undesired electronic content automatically generated for commercial purposes. 

How often have the words junk e-mail and spam occurred in a corpus of books? (source: Google Ngram Viewer )