fun vs intelligibility

fun

noun
  • playful, often noisy, activity. 

  • amusement, enjoyment or pleasure 

verb
  • To tease, kid, poke fun at, make fun of. 

adj
  • Enjoyable or amusing. 

  • Whimsical or flamboyant. 

intelligibility

noun
  • The quality of recorded speech of every word being understandable. 

  • That which is intelligible; the degree to which something is intelligible. 

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