covey vs mandem

covey

noun
  • A party or group (of persons or things). 

  • A brood of partridges, grouse, etc. 

  • Coordinate terms: flock, gaggle, host 

  • A group of 8–12 (or more) quail. 

verb
  • To brood; to incubate. 

mandem

noun
  • group of men or boys; male friends 

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