labour vs struggle

labour

verb
  • To be oppressed with difficulties or disease; to do one's work under conditions which make it especially hard or wearisome; to move slowly, as against opposition, or under a burden. 

  • To suffer the pangs of childbirth. 

  • To pitch or roll heavily, as a ship in a turbulent sea. 

  • To belabour, to emphasise or expand upon (a point in a debate, etc). 

  • To toil, to work. 

noun
  • Workers in general; the working class, the workforce; sometimes specifically the labour movement, organised labour. 

  • That which requires hard work for its accomplishment; that which demands effort. 

  • The act of a mother giving birth. 

  • Effort expended on a particular task; toil, work. 

  • A traditional unit of area in Mexico and Texas, equivalent to 177.1 acres or 71.67 ha. 

  • A group of moles. 

  • The pitching or tossing of a vessel which results in the straining of timbers and rigging. 

  • A political party or force aiming or claiming to represent the interests of labour. 

  • The time period during which a mother gives birth. 

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 labour and struggle occurred in a corpus of books? (source: Google Ngram Viewer )