Synonyms of functions

1 Syllable
task, goal, role, work, mark, post, part
2 Syllables
action, mission, object, duty, target, charge, affair, use, concern, power
3 Syllables
purpose, province, service, faculty, office, behavior, business, employment, situation
4 Syllables
objective, utility, exercise, operation, activity, occupation
6 Syllables
responsibility