check off vs show

check off

verb
  • To mark items on a list (with a checkmark or by crossing them out) that have been chosen for keeping or removal or that have been dealt with (for example, completed or verified as correct or satisfactory); to tick off (UK), tick (UK), cross off, strike off. 

  • To carry out a decision recorded through the process of checking off an item on a list, including dealing with it, removing it from the possible choices, or removing the not checked items from further consideration. 

  • To deduct union members' dues from their wages. 

show

verb
  • To guide or escort. 

  • To put in an appearance; show up. 

  • To have an enlarged belly and thus be recognizable as pregnant. 

  • To indicate (a fact) to be true; to demonstrate. 

  • To finish third, especially of horses or dogs. 

  • To reveal one's hand of cards. 

  • To bestow; to confer. 

  • To display, to have somebody see (something). 

  • To be visible; to be seen; to appear. 

noun
  • An exhibition of items. 

  • A broadcast program, especially a light entertainment program. 

  • A project or presentation. 

  • Mere display or pomp with no substance. (Usually seen in the phrases "all show" and "for show".) 

  • A play, dance, or other entertainment. 

  • A battle; local conflict. 

  • The major leagues. 

  • A discharge, from the vagina, of mucus streaked with blood, occurring a short time before labor. 

  • Outward appearance; wileful or deceptive appearance. 

  • A demonstration. 

  • An agricultural show. 

  • A movie. 

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