allheal vs valerian

allheal

noun
  • Valeriana officinalis, a species in the valerian family. 

  • Stachys, a genus of plants in the mint family, heal-all, self-heal, woundwort, betony, lamb's ears, hedgenettle. 

  • Prunella vulgaris, a species in the mint family. 

valerian

noun
  • More generally, any plant of the genus Valeriana. 

  • An extract of the dried roots of the Valeriana officinalis used in herbal medicine as a sedative. 

  • A hardy perennial flowering plant, Valeriana officinalis, with heads of sweetly scented pink or white flowers. 

  • The root of Valeriana officinalis, used in herbal medicine. 

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