problem in WordNet English dictionary

1. 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"
   problem  job 
   
2. a source of difficulty
   "one trouble after another delayed the job"; "what's the problem?"
   trouble  problem 
   
3. a question raised for consideration or solution
   "our homework consisted of ten problems to solve"
   problem