selector vs selector switch

selector

noun
  • An administrator responsible for selecting which players will play for a side. 

  • A matching expression in a stylesheet determining which elements in the markup are affected by a style. 

  • A text string transmitted to a Gopher server, identifying the resource to be retrieved. 

  • Someone or something which selects or chooses. 

  • A person who is entitled to choose a tract of Crown land to purchase. 

  • A pointer to a structure describing a segment of memory. 

  • A disc jockey. 

selector switch

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