How to sign: a state of difficulty that needs to be resolved
"she and her husband are having problems"; "it is always a job to contact him"; "urban problems such as traffic congestion and smog";
Similiar / Same: job
Categories: difficulty
Within this category: balance-of-payments problem, race problem
How to sign: a source of difficulty
"one trouble after another delayed the job"; "what's the problem?";
Similiar / Same: trouble
Categories: difficulty
Within this category: can of worms, deep water, growing pains, hydra, matter