modal vs pop-up

modal

adj
  • Requiring immediate user interaction and thus presented so that it cannot be closed or interacted behind until a decision is made. 

  • Relating to the statistical mode. 

  • Having separate modes in which user input has different effects. 

  • Of, or relating to a mode or modus. 

  • Of, relating to, or composed in the musical modi by which an octave is divided, associated with emotional moods in Ancient — and in medieval ecclesiastical — music. 

  • Of, or relating to the modality between propositions. 

  • Relating to the form of a thing rather to any of its attributes. 

  • Of, relating to, or describing the mood of a clause. 

  • a modal dialog; a modal window 

noun
  • A modal window, one that cannot be closed until a decision is made. 

  • A modal proposition. 

  • A modal verb. 

  • A modal form, notably a modal auxiliary. 

pop-up

adj
  • Operating or existing for a brief period only; temporary. 

  • Opening out to form a three-dimensional structure when the page of a book is opened. 

  • Coming into view suddenly from a concealed position. 

  • Employing the cold launch technique. 

noun
  • A folded paper element which pops up from a book, greeting card, etc. 

  • A pop-up ball: a ball that has been hit to a considerable height above the infield or the shallow outfield; a pop fly. 

  • A business that quickly pops up, such as a temporary restaurant. 

  • A pop-up advertisement; an advertisement that is triggered to appear on a computer screen when an Internet user accesses a particular web page. 

How often have the words modal and pop-up occurred in a corpus of books? (source: Google Ngram Viewer )