cohort vs gens

cohort

noun
  • A natural group of orders of organisms, less comprehensive than a class. 

  • A demographic grouping of people, especially those in a defined age group, or having a common characteristic. 

  • Any division of a Roman legion, normally of about 500 or 600 men (equalling about six centuries). 

  • Any band or body of warriors. 

  • A group of people supporting the same thing or person. 

  • A set of individuals in a program, especially when compared to previous sets of individuals within the same program. 

  • A colleague. 

  • An accomplice; abettor; associate. 

verb
  • To associate with such a group 

gens

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

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

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