contend vs yes

contend

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

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

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

yes

verb
  • to agree with, affirm, approve. 

  • to attempt to flatter someone by habitually agreeing 

noun
  • An affirmative expression; an answer that shows agreement or acceptance. 

  • A vote of support or in favor/favour of something. 

intj
  • An exclamation of pleasure or approval, usually transcribed with an exclamation point. 

  • Response that confirms that the user is paying attention. 

  • Used to ask for more information with a request. 

adv
  • that is correct 

particle
  • Answer to a question presuming one answer when all answers are correct. 

  • Used to indicate disagreement or dissent in reply to a negative statement. 

  • Used to show agreement or acceptance. 

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