contend vs quit

contend

verb
  • To struggle or exert oneself to obtain or retain possession of, or to defend. 

  • To be in opposition; to contest; to dispute; to vie; to quarrel; to fight. 

  • To be in debate; to engage in discussion; to dispute; to argue. 

  • To believe (something is reasonable) and argue (for it); to advocate. 

  • contend with: To try to cope with a difficulty or problem. 

quit

verb
  • To set at rest; to free, as from anything harmful or oppressive; to relieve; to clear; to liberate. 

  • To leave (a place). 

  • To release from obligation, accusation, penalty, etc.; to absolve; to acquit. 

  • To stop, give up (an activity) (usually + gerund or verbal noun). 

  • To resign from (a job, office, position, etc.). 

  • To close (an application). 

  • To abandon, renounce (a thing). 

noun
  • Any of numerous species of small passerine birds native to tropical America. 

adj
  • Released from obligation, penalty, etc; free, clear, or rid. 

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