ambrosia vs ragweed

ambrosia

noun
  • Any fungus of a number of species that insects such as ambrosia beetles carry as symbionts, "farming" them on poor-quality food such as wood, where they grow, providing food for the insect. 

  • A dessert made of shredded coconuts and tropical fruits such as pineapples and oranges; some recipes also include ingredients such as marshmallow and cream. 

  • Any food with an especially delicious flavour or fragrance. 

  • Anything delightfully sweet and pleasing. 

  • The anointing-oil of the gods. 

  • The food of the gods, thought to confer immortality. 

  • A mixture of nectar and pollen prepared by worker bees and fed to larvae. 

  • An annual herb historically used medicinally and in cooking, Dysphania botrys. 

ragweed

noun
  • A plant of the genus Ambrosia. These weeds are particularly noted for producing pollen which people with hay fever are allergic to. 

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