long-player vs seventy-eight

long-player

noun

  • Synonym of long-play 

seventy-eight

num

  • The cardinal number immediately following seventy-seven and preceding seventy-nine. 

noun

  • A gramophone record designed to be rotated at 78 revolutions per minute; a 78 

How often have the words long-player and seventy-eight occurred in a corpus of books? (source: Google Ngram Viewer )