ternary vs threefold

ternary

adj
  • Arranged in groups of three. 

  • Having three variables. 

  • To the base three. 

  • Containing, or consisting of, three different parts, as elements, atoms, groups, or radicals, which are regarded as having different functions or relations in the molecule. 

  • Made up of three things. 

noun
  • A group of three things; a trio, threesome or tierce. 

threefold

adj
  • triple 

  • three times as great 

verb
  • To make threefold; to triple. 

adv
  • by a factor of three 

noun
  • An algebraic variety of dimension 3. 

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