if only vs yet

if only

conj
  • Even if for no other reason than; only just. 

  • Used other than figuratively or idiomatically: see if, only. 

  • I wish that; signifies a wish or desire for the present or the future. 

  • I wish that; signifies a regret about an action in the past. 

yet

conj
  • Nevertheless; however; but; despite that. 

noun
  • A metal pan or boiler; yetling. 

verb
  • To get. 

adv
  • Not as of the time referenced. 

  • At some future time; eventually. 

  • In addition. 

  • 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. 

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