flapping vs grounded

flapping

adj
  • that flaps or flap 

noun
  • The situation where a resource, a network destination, etc., is advertised as being available and then unavailable (or available by different routes) in rapid succession. 

  • The unlicensed racing of horses or greyhounds. 

  • An instance where one flaps. 

  • A phonological process found in many dialects of English, especially American English and Canadian English, by which intervocalic /t/ and /d/ surface as the alveolar flap /ɾ/ before an unstressed syllable, so that words such as "metal" and "medal" are pronounced similarly or identically. 

grounded

adj
  • Mature; sensible, with well-considered priorities. 

  • Of or pertaining to an electrical conductor which is connected to earth; earthed. 

  • Aground. 

  • Not allowed to fly. 

  • Confined to stay inside, typically by a parent, as a punishment. 

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