Start
Part of speech: noun
Definition: The beginning of an activity. A sudden involuntary movement. The beginning point of a race. An appearance in a sports game from the beginning of the match.
Part of speech: verb
Definition: To set in motion. To begin. To initiate a vehicle or machine. To begin an activity. To jerk suddenly in surprise. To awaken suddenly.
Example sentence: The day you take complete responsibility for yourself, the day you stop making any excuses, that's the day you start to the top.
Commencement
Part of speech: noun
Definition: The first existence of anything; act or fact of commencing; rise; origin; beginning; start.The day when degrees are conferred by colleges and universities upon students and others.A graduation ceremony, from a school, college or university.