icon vs image

icon

noun
  • An image, symbol, picture, or other representation usually as an object of religious devotion. 

  • A small picture that represents something. 

  • A person or thing that is the best example of a certain profession or some doing. 

  • A type of religious painting portraying a saint or scene from Scripture, often done on wooden panels. 

  • A word, character, or sign whose form reflects and is determined by the referent; onomatopoeic words are necessarily all icons. 

image

noun
  • An optical or other representation of a real object; a graphic; a picture. 

  • A statue or idol. 

  • What a function maps to. 

  • A file that contains all information needed to produce a live working copy. (See disk image and image copy.) 

  • A form of interference: a weaker "copy" of a strong signal that occurs at a different frequency. 

  • The subset of a codomain comprising those elements that are images of something. 

  • A mental picture of something not real or not present. 

  • A characteristic of a person, group or company etc., style, manner of dress, how one is or wishes to be perceived by others. 

verb
  • To create an image of. 

  • To create a complete backup copy of a file system or other entity. 

  • To represent by an image or symbol; to portray. 

  • To reflect, mirror. 

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