topic, problem

QUESTION
List of words for the clue topic, problem from the crossword:
EGO ISSUE SMOG APNEA DTS LISP DEBT GAP AGE INERTIA EROSION ARSON AREA COLIC WOE DENT RENT GRAMMAR ESTATE
WordClue
ISSUEquestion, topic
TOPICquestion, problem
THREADtopic
COMPLEXproblem
INQUIRYquestion, problem
SUBJECTmatter, topic
QUESTIONtopic, inquiry
FLASHLIGHTtorch