extension vs tailpiece

extension

noun
  • A part of a building that has been extended from the original 

  • The set of tuples of values that, used as arguments, satisfy the predicate. 

  • Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension. 

  • A file extension. 

  • University programs that are targeted at the broader (usually adults) community whose participants are not full-time enrolled students. 

  • That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension") 

  • semantic widening, broadening of meaning 

  • An optional software component that adds functionality to an application. 

  • A simple offensive action, consisting of extending the weapon arm forward. 

  • The act of extending; a stretching out; enlargement in length, breadth, or time; an increase 

  • The operation of stretching a broken bone so as to bring the fragments into the same straight line. 

  • The state of being extended 

  • A written engagement on the part of a creditor, allowing a debtor further time to pay a debt. 

  • A numerical code used to specify a specific telephone in a telecommunication network. 

  • An exercise in which an arm or leg is straightened against resistance. 

  • A kind of derivative morpheme applied to verbs in Bantu languages. 

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 extension and tailpiece occurred in a corpus of books? (source: Google Ngram Viewer )