circumstance,
situation, instance, event, occasion, incident
argument,
reason, defense, justification, rationale, basis
job,
project, commission, assignment, task, problem, issue
court
case, legal action, lawsuit, suit, indictment, litigation
instance,
item, example, illustration, paradigm, a case in point
container,
holder, box, casing, cover, glasses case, crate, pencil case, folder
suitcase,
overnight case, weekend case, briefcase, attaché case, carrycase, travel
case