axel / axil / axle 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. 👇
axel: NA
axil: (noun) the upper angle between an axis and an offshoot such as a branch or leafstalk.
axle: (noun) a shaft on which a wheel rotates.
axel: AE·k·s·ah·l
axil: NA
axle: AE·k·s·ah·l
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)