apple vs eye-apple

apple

noun
  • The Adam's apple. 

  • A Native American or red-skinned person who acts and/or thinks like a white (Caucasian) person. 

  • Something which resembles the fruit of Malus domestica, such as a globe, ball, or breast. 

  • Any fruit or vegetable, or any other thing produced by a plant such as a gall or cone, especially if produced by a tree and similar to the fruit of Malus domestica; also (with qualifying words) used to form the names of specific fruits such as custard apple, rose apple, thorn apple etc. 

  • A common, round fruit produced by the tree Malus domestica, cultivated in temperate climates. 

  • When smiling, the round, fleshy part of the cheeks between the eyes and the corners of the mouth. 

  • The wood of the apple tree. 

  • The fruit of the Tree of Knowledge, eaten by Adam and Eve according to post-Biblical Christian tradition; the forbidden fruit. 

  • A tree of the genus Malus, especially one cultivated for its edible fruit; the apple tree. 

  • An assist. 

  • A CB radio enthusiast. 

verb
  • To make or become apple-like. 

eye-apple

noun
  • Synonym of apple of one's eye 

  • The eyeball or pupil 

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