duple vs duplex

duple

adj
  • Double. 

  • Having two beats in each foot. 

  • Having two beats, or a multiple of two beats, in each measure. 

duplex

adj
  • Bidirectional (in two directions). 

  • Having two floors 

  • Having two units, divisions, suites, apartments 

  • Having horizons with contrasting textures. 

noun
  • A cancellation combining a numerical cancellation with a second mark showing time, date, and place of posting. 

  • A double-stranded polynucleotide. 

  • A dwelling unit with two floors 

  • A throwing motion where two balls are thrown with one hand at the same time. 

  • A system of multiple thrust faults bounded above and below by a roof thrust and floor thrust. 

  • A house made up of two dwelling units. 

verb
  • To make a series of duplex throws. 

  • To make duplex. 

  • To make into a duplex. 

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