ampoule vs ampule

ampoule and ampule both are nouns.

Word	Noun	Adjective	Verb	Adverb
ampoule	Yes	No	No	No
ampule	Yes	No	No	No

As nouns, ampoule and ampule are synonyms defined as:

ampoule and ampule: a small bottle that contains a drug (especially a sealed sterile container for injection by needle)

Other synonyms of ampoule include ampul, phial, vial.

ampoule (noun)	ampule (noun)
a small bottle that contains a drug (especially a sealed sterile container for injection by needle)	a small bottle that contains a drug (especially a sealed sterile container for injection by needle)