Difference between Ragweed and Ambrosia

What is the difference between Ragweed and Ambrosia?

Ragweed as a noun is a plant of the genus ambrosia. these weeds are particularly noted for producing pollen which people with hay fever are allergic to. while Ambrosia as a noun is (greek & roman mythology) the food of the gods, thought to confer immortality

We hope you now know whether to use Ragweed or Ambrosia in your sentence.