anterior vs pioneer

anterior

adj
  • Pronounced with an obstruction located in front of the palato-alveolar region of the mouth, e.g. b, p, d, t. 

  • (of a part of a flower or leaf) Situated further away from the mainstem. 

  • Nearer the forward end, especially in the front of the body; nearer the head or forepart of an animal. 

  • Coming before or earlier in time or development, prior to, preceding. 

pioneer

noun
  • 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. 

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

  • 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 anterior and pioneer occurred in a corpus of books? (source: Google Ngram Viewer )