more and more vs yet

more and more

adv
  • Progressively more. 

  • Indicates that the statement is becoming progressively more true. 

  • In a manner that progressively increases. 

det
  • Increasingly more; a growing number of; a growing quantity of. 

yet

adv
  • In addition. 

  • Not as of the time referenced. 

  • At some future time; eventually. 

  • In negative imperative use, asking for an action to be delayed. 

  • Even. 

  • In negative or interrogative use, often with an expectation or potential of something happening in the future. 

conj
  • Nevertheless; however; but; despite that. 

verb
  • To get. 

noun
  • A metal pan or boiler; yetling. 

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