Registration
Part of speech: noun
Definition: the act of signing up or registering for something that which registers or makes something official, e.g. the form or paper that registers alignment, e.g. of colors or other elements in a printing process the location where guests register, especially with a hotel.
Example sentence: To let the people know there was life beyond Shirley Dean, we decided to focus on voter registration; each day I set up my card table somewhere in the district, signed people up, and passed out noses.
Enrolment
Part of speech: noun
Definition: The act of enrolling or the state of being enrolledThe people enrolled, considered as a groupThe number of people enrolledThe record of such enrolling; registration