absinthium vs artemisia

absinthium

noun
  • The dried leaves and flowering tops of the wormwood plant. 

  • absinthe oil 

artemisia

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

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