control A2

/kənˈtɹoʊl/ The power to direct, manage, or make decisions about something.

role A2

/ɹoʊl/ The part that someone or something plays in a situation or activity.

controller C2+

/kənˈtroʊlɚ/ a person or device that directs or regulates something

controllable C2+

/kənˈtroʊləbəl/ capable of being managed or directed

enrollment C2+

/ɛnˈroʊlmənt/ the act of registering, or the number of people registered