dry spell vs monsoon

dry spell

noun
  • A drawn-out period where the weather has been dry, for an abnormally long time; shorter and not as severe as a drought. 

  • A period or time where there is little activity, productivity, low income etc. 

  • A period of time without sexual intercourse. 

monsoon

noun
  • Tropical rainy season when the rain lasts for several months with few interruptions. 

  • Entire meteorological systems with such characteristics. 

  • Any of a number of winds associated with regions where most rain falls during a particular season. 

  • The rains themselves. 

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