concatenation vs stringed instrument

concatenation

noun
  • The operation of joining multiple character strings. 

  • The application of these series of links. 

  • A series of links united; a series or order of things depending on each other, as if linked together; a chain, a succession. 

  • A character string formed by joining multiple character strings. 

stringed instrument

noun
  • Any of very many musical instruments in which taut strings are plucked, bowed or struck in order to produce a sound 

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