ampul vs phial

ampul and phial both are nouns.

Word	Noun	Adjective	Verb	Adverb
ampul	Yes	No	No	No
phial	Yes	No	No	No

As nouns, ampul and phial are synonyms defined as:

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

Other synonyms of ampul include ampoule, ampule, vial.

ampul (noun)	phial (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)