diving vs scuba diving

diving

noun
  • The sport of jumping into water, often acrobatically. 

  • The action of the verb to dive in any sense. 

  • The act of pretending to be tripped or brought to the ground by an opposition player in order to secure a undeserved penalty. 

  • Descending below the surface of the water to interact with the environment. 

adj
  • That or who dives or dive. 

scuba diving

noun
  • Underwater swimming using scuba equipment. 

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