gens vs kindred

gens

noun
  • A tribal subgroup whose members are characterized by having the same descent, usually along the male line. 

  • A legally defined unit of Roman society, being a collection of people related through a common ancestor by birth, marriage or adoption, possibly over many generations, and sharing the same nomen gentilicium. 

  • A host-specific lineage of a brood parasite species.^([W]) 

kindred

noun
  • People of the same ethnic descent, not including speaker; brethren. 

  • A grouping of relatives. 

  • A household or group following the modern pagan faith of Heathenry or Ásatrú. 

  • Affinity, likeness. 

  • Blood relationship. 

  • Distant and close relatives, collectively; kin. 

  • One who is kindred, literally or figuratively; a kin, kinsman. 

adj
  • Connected, related, cognate, akin. 

  • Of the same nature, or of similar character. 

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