triplex vs triumvirate

triplex

noun
  • A building with three apartments or divisions. 

  • A dwelling unit with three floors. 

  • Triple time. 

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

adj
  • Having three units, divisions, suites, apartments 

  • Having three floors 

verb
  • To make triplex. 

triumvirate

noun
  • An official group of three people, especially a ruling council of three men and particularly (historical) two such councils in Roman history. 

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