combo vs septenary

combo

noun
  • A combination. 

  • A strategy aiming to win by playing a specific combination of cards (or similar), often in a single turn. 

  • Two or more gameplay elements (e.g. characters, items) which are powerful when used together. 

  • A Caucasian man who marries or has a sexual relationship with an Aboriginal woman; a Caucasian man who lives among Aboriginal people and adopts Aboriginal culture 

  • A combo box. 

  • A small musical group. 

  • An action composed of a sequence of simpler actions, especially a composite attacking move in a fighting game. 

verb
  • To combine 

septenary

noun
  • A group of seven things. 

  • A period of seven years. 

  • The seven notes of the diatonic scale. 

adj
  • Of seventh rank or order. 

  • Consisting of or containing seven. 

  • Lasting seven years; continuing seven years. 

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