antecedent vs pioneer

antecedent

noun
  • An ancestor. 

  • The first term of a ratio, i.e. the term a in the ratio a:b, the other being the consequent. 

  • Previous principles, conduct, history, etc. 

  • Any thing that precedes another thing, especially the cause of the second thing. 

  • A word, phrase or clause referred to by a pronoun. 

  • The first of two subsets of a sequent, consisting of all the sequent's formulae which are valuated as true. 

  • The conditional part of a hypothetical proposition, i.e. p→q, where p is the antecedent, and q is the consequent. 

adj
  • Earlier, either in time or in order. 

  • Presumptive. 

pioneer

noun
  • A person or other entity who is first or among the earliest in any field of inquiry, enterprise, or progress. 

  • A member of a children’s organization operated by the Communist Party, typically in the second of three stages toward becoming an member of the Party itself. 

  • One who goes before, as into the wilderness, preparing the way for others to follow. 

  • Some people will consider their national heroes to be pioneers of civilization. 

  • A member of any of several European organizations advocating abstinence from alcohol. 

verb
  • To be the first to do or achieve (something), preparing the way for others to follow. 

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