isolation vs retirement

isolation

noun
  • The state of being isolated, detached, or separated; the state of being away from other people. 

  • The separation of a patient, suffering from a contagious disease, from contact with others (compare: quarantine) 

  • The state of not having diplomatic relations with other countries (either with most or all other countries, or with specified other countries). 

  • The obtaining of an element from one of its compounds, or of a compound from a mixture 

  • The act of isolating. 

  • A database property that determines when and how changes made in one transaction are visible to other concurrent transactions. 

  • A Freudian defense mechanism in which a person suppresses a harmful thought from developing into a train of thought. 

retirement

noun
  • The state of being retired; seclusion. 

  • An act of retiring; withdrawal. 

  • The state of having permanently left one's employment, now especially at reaching pensionable age; the portion of one's life after retiring from one's career. 

  • The act of leaving one's career or employment permanently. 

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