faille / file / phial are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
faille: (noun) a ribbed woven fabric of silk or rayon or cotton.
file: (noun) a set of related records (either written or electronic) kept together. (noun) a line of persons or things ranged one behind the other. (noun) office furniture consisting of a container for keeping papers in order. (noun) a steel hand tool with small sharp teeth on some or all of its surfaces; used for smoothing wood or metal. (verb) record in a public office or in a court of law. (verb) smooth with a file. (verb) proceed in line. (verb) place in a container for keeping records.
phial: (noun) a small bottle that contains a drug (especially a sealed sterile container for injection by needle).
faille: NA
file: f·AY·l
phial: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)