Milestone and Stepwise

Milestone noun - A point in a chain of events at which an important change (as in one's fortunes) occurs.

Stepwise and milestone are semantically related in stage topic. In some cases you can use "Stepwise" instead a noun "Milestone", when it comes to topics like phase.

Stepwise adverb - Proceeding in steps.

Milestone and stepwise are semantically related in stage topic. Sometimes you can use "Milestone" instead a noun "Stepwise", if it concerns topics such as phase.