collective vs occupational

collective

adj
  • Having plurality of origin or authority. 

  • Formed by gathering or collecting; gathered into a mass, sum, or body. 

  • Tending to collect; forming a collection. 

  • Expressing a collection or aggregate of individuals, by a singular form. 

noun
  • A group dedicated to a particular cause or interest. 

  • A farm owned by a collection of people. 

  • A collective noun or name. 

  • One of more farms managed and owned, through the state, by the community. 

  • The flight control used to control a helicopter's ascent or descent. 

occupational

adj
  • Of, belonging, or relating to an occupation (in any sense). 

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