contingent vs detachment

contingent

noun
  • A quota of troops. 

  • That which falls to one in a division or apportionment among a number; a suitable share. 

  • An event which may or may not happen; that which is unforeseen, undetermined, or dependent on something future. 

adj
  • Possible or liable, but not certain to occur. 

  • Dependent on something that is undetermined or unknown, that may or may not occur. 

  • Not logically necessarily true or false. 

  • Temporary. 

detachment

noun
  • The unit so dispatched. 

  • A permanent unit organized for special duties. 

  • Indifference to the concerns of others; disregard; nonchalance; aloofness. 

  • The state of being detached or disconnected; insulation. 

  • The separation of a military unit from the main body for a particular purpose or special mission. 

  • The action of detaching; separation. 

  • Absence of bias; impartiality; objectivity. 

  • Any smaller portion of a main body separately employed. 

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