flugelhorn vs ground pine

flugelhorn

noun
  • A brass instrument resembling a cornet but with a wider, conical bore, and usually with three valves, in the same B-flat pitch as many trumpets and cornets but with a more deeply conical mouthpiece than those. A bugle with valves. 

ground pine

noun
  • Lycopodium clavatum (stag's-horn clubmoss, running clubmoss) 

  • Ajuga, a genus of herbaceous flowering plants in the mint family Lamiaceae, with most species native to Europe, Asia, and Africa; also, specifically 

  • Diphasiastrum complanatum (syn. Lycopodium complanatum) (northern running-pine), a species of clubmoss native to dry coniferous forests throughout the holarctic region. 

  • Lycopodium obscurum (princess pine), native to eastern North America 

  • Ajuga chamaepitys (yellow bugle), native to Europe, the eastern part of the Mediterranean, and North Africa 

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