flashcard vs flipcard

flashcard

noun
  • A card used to aid rote memorization. One side of the card contains data of one kind, or a question, and the other side contains the associated response which one wants to memorize. For example, one side could contain an English word, and the other side the Spanish translation. 

  • A solid-state digital memory storage format, commonly found on computers, digital cameras and cellphones. 

flipcard

noun
  • Synonym of flashcard (“card to aid memorization, with a cue on one side and a response on the other”) 

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