Open English Wordnet
Nouns
(n)engagement, participation, involvement, involutionthe act of sharing in the activities of a group“the teacher tried to increase his students' engagement in class activities”
(n)involvementa connection of inclusion or containment“he escaped involvement in the accident”, “there was additional involvement of the liver and spleen”
(n)interest, involvementa sense of concern with and curiosity about someone or something“an interest in music”
(n)participation, involvementthe condition of sharing in common with others (as fellows or partners etc.)