braking / breaking 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. 👇
braking: (verb) stop travelling by applying a brake. (verb) cause to stop by applying the brakes.
breaking: NA
braking: b·r·EY·k·ih·ng
breaking: b·r·EY·k·ih·ng
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)