fun vs rag week

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. 

rag week

noun
  • An annual event in many universities where students engage in unusual activities to raise money for charity. 

  • The days of the month when a woman has her period. 

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