artemisia vs wormwood

artemisia

noun
  • Any of many aromatic flowering plants of the genus Artemisia, including wormwood, sagebrush, and tarragon, often used as traditional medicine and flavouring. 

wormwood

noun
  • An intensely bitter herb (Artemisia absinthium and similar plants in genus Artemisia) used in medicine, in the production of absinthe and vermouth, and as a tonic. 

  • Something that causes bitterness or affliction; a cause of mortification or vexation. 

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