valerian vs woundwort

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. 

woundwort

noun
  • Any of several plants of the genus Stachys 

  • Achillea millefolium (soldier's woundwort) 

  • Solidago virgaurea (European golden-rod) 

  • Anthyllis vulneraria (kidney-vetch) 

  • Bellis perennis (English daisy) 

  • Prunella vulgaris (common self-heal) 

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