bear garlic vs onion grass

bear garlic

noun
  • A wild plant related to chives; ramsons, Allium ursinum 

onion grass

noun
  • Wild or feral chives, garlic, or other species with grass-like leaves in the genus Allium, particularly 

  • Romulea rosea 

  • Allium vineale, a wild herb native to Europe and western Asia, naturalised elsewhere; a common lawn weed. 

  • Species of Melica, especially Melica bulbosa 

How often have the words bear garlic and onion grass occurred in a corpus of books? (source: Google Ngram Viewer )