battle vs struggle

battle

verb
  • To fight or struggle; to enter into a battle with. 

  • To render (land, soil, etc.) fertile or fruitful. 

  • To feed or nourish (someone or something). 

  • To join in battle; to contend in fight 

noun
  • A contest, a struggle. 

  • A general action, fight, or encounter, in which all the divisions of an army are or may be engaged; a combat, an engagement. 

  • battle buddy 

adj
  • Improving; nutritious; fattening. 

  • Fertile; fruitful. 

struggle

verb
  • To strive, to labour in difficulty, to fight (for or against), to contend. 

  • To strive, or to make efforts, with a twisting, or with contortions of the body. 

noun
  • A contortion of the body in an attempt to escape or to perform a difficult task. 

  • Strife, contention, great effort. 

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