Emphasis
An emphasis is a focused area of study that may be offered as a track within a department's degree program, or as an optional interdisciplinary addition to an existing graduate degree program in one or more departments. An emphasis is noted on transcripts but does not appear on diplomas.
Enrollment
Quarterly process of (1) registering for classes, (2) payment of fees in a quarter, and (3) clearing all blocks. A student is considered "enrolled" when they have registered in at least one course, paid all financial obligations for that quarter, and have no blocks.