Commentary: job, trouble - a state or source of difficulty
Examples:
She and her husband are having problems.
It is always a job to contact him.
Urban problems such as traffic congestion and smog are reason enough to move.
One problem after another delayed the job.
What's the problem?
Mappings:
WordNet 2.0 Sense Numbers: 1 2
Commentary: a question raised for consideration or solution
Examples:
Our homework consisted of ten problems to solve.
Mappings:
WordNet 2.0 Sense Numbers: 3