subscript vs tailpiece

subscript

noun
  • A type of lettering form written lower than the things around it. 

  • An index into an array or hash. 

adj
  • Written underneath. 

verb
  • To access (an array element) by its index. 

  • To convert to a subscript form. 

  • To provide with a subscript. 

tailpiece

noun
  • A short joist between a header and a wall. 

  • An appendage or appendix. 

  • An element, often triangular, to which the strings of a violin, guitar, etc. are attached at the lower end of an instrument. 

  • The part of a telescope containing the adjusting device for the eyepiece, etc. 

  • The part of a lock that transmits motion from the hub to the latch bolt. 

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