See here.
Create a capability e.g. feature, test, dependency.
Remove a capability e.g. feature, test, dependency.
Fix an issue e.g. bug, typo, accident, misstatement.
Increase the version of something e.g. dependency.
Change the build process, or tooling, or infra.
Begin doing something; e.g. create a feature flag.
End doing something; e.g. remove a feature flag.
A code change that MUST be just a refactoring.
Refactor of formatting, e.g. omit whitespace.
Refactor of performance, e.g. speed up code.
Refactor of documentation, e.g. help files.