ampulla vs ewer

ampulla

noun
  • A vessel for containing consecrated wine or oil. 

  • An Ancient Roman two-handled vessel. 

  • The spongiole of a root. 

  • The dilated end of a duct. 

ewer

noun
  • A kind of widemouthed pitcher or jug with a shape like a vase and a handle. 

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