petiole vs seta

petiole

noun
  • The stalk of a leaf, attaching the blade to the stem. 

  • A narrow or constricted segment of the body of an insect; especially, the metasomal segment of certain Hymenoptera, such as wasps. 

  • The stalk at the base of the nest of the paper wasp. 

seta

noun
  • The stalk of a moss sporangium, or occasionally in a liverwort. 

  • A bristle or hair 

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