pickpocket vs tamper

pickpocket

noun
  • One who steals from the pocket of a passerby, usually by sleight of hand. 

verb
  • To pick pockets; to steal. 

tamper

noun
  • A person or thing that tamps. 

  • A tool used to tamp something down, such as tobacco in a pipe. 

  • An envelope of neutron-reflecting material in a nuclear weapon, used to delay the expansion of the reacting material and thus produce a longer-lasting and more energetic explosion. 

  • A railway vehicle used to tamp down ballast. 

verb
  • To make unauthorized or improper alterations, sometimes causing deliberate damage; to meddle (with something). 

  • To try to influence someone, usually in an illegal or devious way; to try to deal (with someone). 

  • To discuss future contracts with a player, against league rules. 

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