braking: the act of stopping motion, generally by means of friction against a moving surface

breaking: the act of rendering something unusable by means of destruction (see 'sabotage' when done wilfully)

The pronunciation of 'braking' and 'breaking' is /ˈbɹeɪkɪŋ/, they are homophones ('same-sounds').

See also: https://writingexplained.org/break-vs-brake-difference

The title was "breaking", when it should have been "braking". This is fixed now.