WordNet sense 1 (a formal ball held for a school class toward the end of the academic year):

prom

WordNet sense 2 (a public area set aside as a pedestrian walk):

mall

WordNet sense 3 (march in a procession):

parade, troop

WordNet sense 4 (a leisurely walk (usually in some public place)):

amble, perambulation, saunter, stroll