addendum vs gain

addendum

noun
  • The height by which the tooth of a gear projects beyond (outside for external, or inside for internal) the standard pitch circle or pitch line. 

  • Something to be added; especially text added as an appendix or supplement to a document. 

  • A postscript. 

gain

noun
  • A square or bevelled notch cut out of a girder, binding joist, or other timber which supports a floor beam, so as to receive the end of the floor beam. 

  • The thing or things gained. 

  • The factor by which a signal is multiplied. 

  • The act of gaining; acquisition. 

adv
  • Tolerably; fairly. 

  • Suitably; conveniently; dexterously; moderately. 

adj
  • Easy; tolerable; handy, dexterous. 

  • Honest; respectable; moderate; cheap. 

verb
  • To increase. 

  • To reach. 

  • To draw into any interest or party; to win to one's side; to conciliate. 

  • To be more likely to catch or overtake an individual. 

  • To put on weight. 

  • To run fast. 

  • To acquire possession of. 

  • To have or receive advantage or profit; to acquire gain; to grow rich; to advance in interest, health, or happiness; to make progress. 

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