detachment vs succession

detachment

noun
  • 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 unit so dispatched. 

  • The action of detaching; separation. 

  • Absence of bias; impartiality; objectivity. 

  • Any smaller portion of a main body separately employed. 

succession

noun
  • In Roman and Scots law, the taking of property by one person in place of another. 

  • An act of following in sequence. 

  • A group of rocks or strata that succeed one another in chronological order. 

  • A right to take possession. 

  • A race or series of descendants. 

  • A sequence of things in order. 

  • A passing of royal powers. 

  • Rotation, as of crops. 

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