Divide the people in two groups. If you have many participants, it is good ot make 4 or 6 groups, with maximum 5 people per group. One group will find keywords around Creativity, defining the term. The other group will find keywords which for them define Activism. After 15 min the groups merge and present to each other briefly their definition. Using big paper and color pens, link both concepts together, discuss if the keywords from the separate concepts still works together or new keywords appears.