impatiens vs spikenard

impatiens

noun
  • Any of various ornamental plants of the genus Impatiens. 

spikenard

noun
  • The plant Nardostachys jatamansi (syn. Nardostachys grandiflora). 

  • A perfumed ointment, extracted from the plant Nardostachys jatamansi that belongs to the Valerian family and grows in the Himalayas. 

  • Lavandula stoechas, another species used in antiquity to produce an aromatic oil. 

  • Any plant of the genus Aralia of the Araliaceae family. 

  • False spikenard (Maianthemum racemosum, syn. Smilacina racemosa) 

  • Ploughman's spikenard (Inula conyza, now Pentanema conyzae). 

  • Wild spikenard (Asarum europaeum). 

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