nang vs rad

nang

adj
  • excellent; awesome; masterful; deeply satisfying. 

noun
  • A metal bulb filled with nitrous oxide gas, inhaled for its disassociative effects, normally intended as a propellant for whipped cream. 

rad

noun
  • A non-SI unit of absorbed dose of radiation, equal to 0.01 gray. 

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