S: (v) enter, participate (become a participant; be involved in) "enter a race"; "enter an agreement"; "enter a drug treatment program"; "enter negotiations"
W: (n) participation [Related to: participate] (the condition of sharing in common with others (as fellows or partners etc.))
W: (n) participation [Related to: participate] (the act of sharing in the activities of a group) "the teacher tried to increase his students' engagement in class activities"
W: (n) participant [Related to: participate] (someone who takes part in an activity) "he was a major player in setting up the corporation"
S: (v) enroll, inscribe, enter, enrol, recruit (register formally as a participant or member) "The party recruited many new members"
S: (v) figure, enter (be or play a part of or in) "Elections figure prominently in every government program"; "How do the elections figure in the current pattern of internal politics?"